WordPress MU

Can anyone tell where is the logic that lists all category posts?

eg: which script renders the pages --
https://blog.com/category/uncategorized
https://blog.com/category/sports

I want to list sitewide posts in the main blog by category in these pages, i think this is the best place to start... if anyone has implemented this pls help..

It isn't really a script that renders that - those URLs are created by mod_rewrite, as a permalink.

This thread here:
http://mu.wordpress.org/forums/topic.php?id=3247&page&replies=121

Even if it says tags at the top, it's from before tags were in WP, and it does in fact use categories.

For a live example of this, go to http://homeschooljournal.net/tags/

once it's set up, you can pretty much do anything.

If you wanted to *replace* the main blog content, just use the autofeed plugin to pull in the sitewide feed (using the sitewide feed plugin) and fiddle the template to categorize the pots.

thanks andrea, i guess i was thinking more interms of your ah_recent posts plugin. I already have predefined categories, I am not sure using separate wordpress install as outlined in the above is right approach for me... If I write a function that retrieves posts from category similar to recent posts plugin, how do I display the results in a separate page?

I also have sitewide feed installed which works fine...http://wpmudevorg.wordpress.com/project/WPMU-Sitewide-Feed-Plugin---ITDamager

I am bit confused if that is same as step 2 in the above post -- 2) Install the WPMufeed plugin and get it working.

"If I write a function that retrieves posts from category similar to recent posts plugin, how do I display the results in a separate page?"

make a special page template and call the function there.
http://codex.wordpress.org/Pages#Creating_your_own_Page_Templates

"am bit confused if that is same as step 2 in the above post -- 2) Install the WPMufeed plugin and get it working."

Yep.