Now I don’t normally evangelize things, unless they are free, awesome, and unless I have used them.
Of course one of the most important aspects of SharePoint is it’s search capability. With any information system the larger the information base becomes the more and more search becomes the most fundamental way in which people retrieve information. We know that information will continue to grow (it never ever ever shrinks) so we can also conclude that free tools and components that sit on top of SharePoint search and provide even more useful abilities/improvements are pretty wonderful.
Faceted Search for SharePoint: http://www.codeplex.com/FacetedSearch
This is not a new codeplex solution, but I have used it before and it really does provide a fair number of powerful enhancements over SharePoint’s search and felt I should recommend something I use often, so here you go. Go get it, try it out, it’s free and can’t hurt.
Note: I am advising you to play and test with this on a DEVELOPMENT environment not on your production server.
Hope you enjoy it as much as I do,