WordPress MU

** I'm on Wordpress MU 2.7 **

Hi there,
I know my quest is likely to be totally easy for you guys but I can't find efficient plugins as per my requirements.
I'd like to display on my home page (the one which displays all my blogs) a right menu as below:
- A filter link for classifying blogs by Most recents blog & Most commented blogs
- A Tag Cloud gathering all the Tag cloud of all my blogs. The result should display the Posts from all my blogs.
-A Search engine letting me to find blog by Title, Author,Tag
-A display part which display the most recently commented blogs
and the the most active (by number of contributions)
-Finally the Top Bloggers and the Top Commenters

For most of them I've found plenty of plugins but none work on MU: it seems they are working on single blogs, not on the head farm of them (ex: "recent post" plugin).

Is there someone who can close my quest ?

Thanx in advance

You need to get Donncha's sitewide tags plugin:

http://ocaoimh.ie/wordpress-mu-sitewide-tags/

That will get you started by consolidating all the posts into one blog. You can have the main blog be the one where all the posts go, and then a lot of the WP plugins will work in that blog to so a lot of the stuff you want.

If you set the tags blog as a sub-blog, you can use this widget to still get a tag cloud to display on the main page:
http://wpmudevorg.wordpress.com/project/featured-blog-tag-cloud-widget-and-shortcode

If you look through the wpmudev plugins list, you'll probably find others that will address some of your issues.

This'll help too:

http://wpmututorials.com/themes/anatomy-of-a-home-page-wordpresscom/

Thanks both, but @DeannaS, if I aggregate all the blogs into one, then - apart double-sizing my dB and my storage - I will always be linked to local copy of comments and posts. In other words, the best is ti be redirected to the native blog where the post has been written (and not to a local copy).
For 3 days by now I try to find theses issues out and I'm just so amazed that so few information is available.
I mean, loads of themes, plugins, tutorials for MU but only for ONE blog.
There is absolutely not the same level of sharing experience in my (I believed so) common need.

Thanx a lot andrea_r, your link is helpful even if in my case that just do not work (plugins surely :-( ).
But if someone has already experienced such a thing, please, collabaorate !!!

Thanks again all of you.
Hope reading quickly solutions ;-)

@micass

There is absolutely not the same level of sharing experience in my (I believed so) common need.

Out of interest - what are you sharing? There are plugins available that will do everything you want in your list, but no one on here will tell you were they are :)

"I aggregate all the blogs into one, then - apart double-sizing my dB and my storage - I will always be linked to local copy of comments and posts. In other words, the best is ti be redirected to the native blog where the post has been written (and not to a local copy)."

The plugin Deanna recommended does just that - links back to the originating post. Just like you want.

Please at least try it out before you decide it won't do what you want when we're telling you it does.

"I mean, loads of themes, plugins, tutorials for MU but only for ONE blog."

You sure you're looking at MU stuff? Because a lot of the info written that is MU specific is done so from *sitewide* perspectives.

Again, I'll offer up this as an example that is can be done:

http://homeschooljournal.net

Also, http://wpmudevorg.wordpress.com - TONS OF WPMU PLUGINS.

@all :sorry if my wording may hurt you. I didn't mean it.
Ok I will try what DeannaS wrote - as it seems I understood wrongly - and hopefully I will feedback.
However on http://wpmudevorg.wordpress.com , there are surely tons of WPMU plugins but on the dedicated tab ('plugin')there is no search engine...Not very user friendly to browse 200+ projects...
Thanks again for your help and see you soon

On the front page of the site, there is a search.