Quoted: Nine companies are saying "yes," having recently launched Enterprise 2.0 offerings that integrate with SharePoint technology.
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Yesterday, Connectbeam announced their new Spotlight Connect for SharePoint, a bookmarking and tagging add-on module for their enterprise social search-and-discovery application that brings social content, collaboration, and bookmarking tools into SharePoint via a special add-on module available this July.

Quoted: According to Mary-Jo Foley, we should pay attention to how Microsoft will integrate FAST into their SharePoint Server. "Remember what Microsoft CEO Steve Ballmer said about SharePoint last year: He characterized SharePoint as the next big operating system from Microsoft," she writes. "More and more, it’s looking like enterprise search functionality is one of the biggest reasons why."

Quoted: okay, not entirely true. i recently got a comment on how sharepoint might not make it in a company because one of the features, a rich editor for html that is used in rich edit areas, wiki, blog, etc., does not support firefox as a browser. basically you can still edit, but you don't get the WYSIWYG environment.
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well, there are a couple of options.

First time I'm hearing about this. Wonder what it offers over Sharepoint.

Quoted: Groove products complement and extend Microsoft's collaboration capabilities by allowing teams of information workers to securely create and share files, manage projects and meetings, and track data and processes in a highly decentralized manner unconstrained by time, location, or organizational affiliation.