Anyone Offer This Type Social Bookmarking Service?

I'm looking for a service that bookmarks URL's to the top social bookmarking sites, and use a unique title, description, and keywords for each site.

I'd also like them to write the unique title, description, and keywords. Is there anything like this around?

Thanks

 

Check Skillipedia Business Network
If you see any social network with better and more advanced features, please let me know.

Viz