The goal for Iconfinder is to provide high quality icons for webdevelopers and designers in an easy and efficient way. The new features includes:
Everybody can add tags for the icons. When new tags are submitted other users can vote. If new tags don't get enough positive votes, the changes will be reversed.
Lots of new icon sets and a nice way to browse them all without searching.
Setting limits to the sizes of the icons shown, changing the number of results per page and changing the background color is now possible with just a few clicks.

There is also a page with most popular tags where you can easily find the icons you need.