FAST Search New in SharePoint 2010

FAST Search is an Add on to the exisiting SharePoint Search.

Standard SharePoint Search Offers the following

* best bets
* facets
* related popular searches etc.,

And FAST Search provides the following Add on's:

* Item counts on the facets
* Visual previews of content
* User contexts
* Extend the core results webpart (uses XSL)
* XRank can be used for soft boost of search resutls