For WordPress MU only. My latest plugin is the sitewide tags pages plugin.
This is the initial release of a plugin that creates a set of pages like the WordPress.com Hot Topics pages. It’s a lot more simplistic, but by feeding posts into one blog it also creates a sitewide feed of all posts plus feeds of any tags and categories too.

Sitewide Tags Options
WordPress MU is a multi blog version of WordPress that runs on WordPress.com. If you use the regular version of WordPress this plugin is not for you and you can ignore this post.
PS. In other MU news. Raanan has a new post on the Publisher Blog about Nationen! blog, a new Danish blog site based on WordPress MU that looks rather nice!
The site was developed by Incsub who are also the guys behind wpmu.org where you’ll probably find all sorts of useful nuggets of MU goodness on a regular basis!
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- WordPress MU Sitewide Tags
This plugin creates a central blog where all the most- WordPress MU Sitewide Tags Pages 0.3.1
One of these days I'll rename all my plugins and- Sitewide Tags 0.4 for WordPress MU
If you use the Sitewide Tags plugin for WordPress MU
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Yes, I agree Mike. I think it’s a bug in switch_to_blog() that doesn’t load in the setting for the tags permalink of the blog you’re switching to (seems to stick with current one – but not really tested in depth – certainly /blog/ (which is it seems to be using) looks ‘hard wired’ into the root blog). I guess I should report it, but still new to this, so didn’t want to rush in and embarrass myself.
Hello
I have installed you plugin, but it only seems to be pulling from only one of the blogs and it is listing them oldest first. I was refered to you plugin via the WMU forums. Here is hwat I am trying to do.
I want a way to display the post recent posts made in the WMU, to a page out side of WMU?
Example
Recent posts for blogs.sitename.com
display on sitename.com
I like the sitewide tags plugin!
sitewide tags copies a blogentry to the main blog.
When using a the plugins ‘gd star rating’ or ‘wp-postratings’ each blogitem have 2 rates:
one on the mainblog and one on the individual blog.
How can we resolve that?
I´m happy with the sitewidetags-plugin and use it for months now to send copies of posts to the main blog. The main blog serves as simple starting-page for my platform.
Today I found that when the copy-post to the main blog is generated it seems that search engines are pinged for the copy-post as well. Is there an easy solution to prevent this w/o setting the main blog to private ??? – This would be a bad solution due to no-follow-tags on the starting-page.
Recommendations welcome.
Best regards,
Andreas
I have a problem: I am building a big site with the sitewide tags plugin pointing to the main-page. Perfect for tags, search, sitewide-stream etc.
BUT from time to time – I don’t know why, it switches the privacy in one of the main-blogs to private and all the sitewide-entries are deleted. It seems forever…
HELP!!! 1. Can I fetch somehow the existing posts (that they show up again)? 2. Can I disable that, so that the posts just stay – even if a blog is turned by accident to private?
Please – those are two VERY important questions for me and I am kind of desoalte right now cause I lost hundrets of articles, tags etc in the main blog that way…
THANKS for HELP!
Michael
Miguael – there isn’t any code to import existing posts, but you can disable the privacy check by commenting out this line:
add_action(‘update_option_blog_public’, ’sitewide_tags_public_blog_update’, 10, 2);
Anyway, you have the source code to the plugin, so you can do whatever you like.
Andreas – disable the pinging option in the settings page for that blog?
Thanks alot – it works now. With the new bulk-options i just updated all the articles and now it works fine. PERFECT! You saved me (twice: first with your plugin, second with your advice). Thanks
@Donncha, Mike and Seb Crump
I have the same problem with the extra blog/tag/ in the tag cloud when i display it on the frontpage of my Wordpress Mu + Buddypress Installation. Is there any solution?
I have a small problem, after creating tags blog, and looking around inside it, I have check’ed “Post to main blog” check box in Site Admin/Options.
After that I can’t change its value (only manually in site database).
Matew
I installed this plugin. Then I go to the url which is http://tags.mydomain.com. But it showed me this error.
The blog you have requested is not installed properly. Please contact the system administrator.
I am usting WPMU 2.7.1, BuddyPress 1.0
http://wpmudev.org/project/Sitewide-Extended-Categories-Widget
But currently it doesn’t show me anything in the category. Is it because of the blog is not installed proplery ? Or Any idea please ? Thanks.
I am having the same problem as apaung. Sitewidetags works fine in my dev setup but not my prod one. Any idea what could be causing the issue?
Hi Donncha, firstly thanks for the Domain Mapping plugin. We’re using it on our site and it works a charm!!
Anyway, that was off topic!
I’ve installed this plugin on our site. The Global Posts blog was created with no problems at all…good start!
However, we’ve noticed that the global_tags table has not been created in the global DB. I’ve had a good look around for a solution and can’t seem to find anything appropriate, so your help would be really appreciated
If it makes a difference, we’re using the premium.wpmudev Multi DB plugin too
Cheers for all your great work!
Sam
Hi! I’ve noticed that when different blogs on our MU install post and our root blog makes an entry using sitewide tags that sometimes random categories are also being created. They always take the form of the number such as 123, 66, 84, etc. The numeric categories don’t show up on the original blog or in their dashboard, it only shows up on our tag blog, which happens to be the root or main blog of the install. Any ideas on why this might be happening or if anyone else might have experienced this? Any feedback appreciated!
Hm… Now that you mention it, Trace, I see it too. Weirdness. We aren’t really using the categories on our tags blog. But, I could see where it would be an issue.
Can i somehow display site wide tags and not site wide posts any way???
Donncha,
Really love this plugin. Been using it for my web site’s landing page. Was wondering if there is a fix that would enable the Sitewide tag page to show the number of comments for a specific post? A post that appears on one of the blog pages will show there are comments pertaining to specific posts, but on the main page that shows the sitewide tags, the same post will say “no comments”. Hope this is clear. Thanks for the help!
-Jean
That isn’t supported but it might be difficult to keep comment counts synced or if done with switch_to_blog() it’d be so slow that a busy tags page would hurt your server performance. Best to just remove the comment count from the tags blog theme I think.
Thanks Donncha! I took your advice, very happy with the result. Fairly simple fix for those looking to do the same. Since my homepage used the same theme as the blogs on the site, I copied the theme folder, edited the index.php file. Look for the code:
Delete that line, save and download the new theme folder back into wordpress. Activate and you’re done.
“”
oops, the code won’t show up. This link shows the code that needs to be deleted for the change. http://wordpress.org/support/topic/319474
[...] Sitewide tags pages for WordPress MU This is the initial release of a plugin that creates a set of pages like the WordPress.com Hot Topics pages. It’s a lot more simplistic, but by feeding posts into one blog it also creates a sitewide feed of all posts plus feeds of any tags and categorie (tags: wordpress wordpressmu tags plugin very+exciting+things) [...]
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[...] I ‘m most excited about with WPMu 2.6, however, is the WPMu Sitewide Tags Pages plugin by Donncha that will change the way we use tags, tag feeds, and archive posts throughout the environment at UMW [...]
[...] make work have all been bundled into one little WPMu plugin developed and shared by the inimitable Donncha: Sitewide Tags Pages for WPMu. This plugin gives you all the functionality that the original hack [...]
[...] month he starts a plugin project with the name “Sitewide tags pages for WordPress MU“: The plugin creates a set of pages like the WordPress.com Hot Topics pages. It’s a lot [...]
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[...] in the form of a simple, easy-to-use plugin. Is Donncha on a roll or what? Last month it was the Sitwewide Tags Plugin (though it’s much more than the name suggests) which kicks major ass. This week it is the [...]
[...] in the form of a simple, easy-to-use plugin. Is Donncha on a roll or what? Last month it was the Sitwewide Tags Plugin (though it’s much more than the name suggests) which kicks major ass. This week it is the [...]
[...] the blog ID to feature from the widget control panel, by default it will use Donncha’s Sitewide Tags Pages(’tags_blog_id’) if installed. Blog_id is matched against existing public [...]
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[...] make work have all been bundled into one little WPMu plugin developed and shared by the inimitable Donncha: Sitewide Tags Pages for WPMu. This plugin gives you all the functionality that the original hack [...]