Better Gmail

Google updated Gmail, and now we're following up with Better Gmail2, a Firefox extension that adds features to the new Gmail interface. Like its predecessor, Better Gmail 2 is a compilation of Greasemonkey user scripts that add features to Gmail, but Better Gmail 2 works with Gmail's overhauled interface. We'll maintain the original Better Gamail extension separately from Better Gmail 2, for users still rocking the older version. However, if you've got the snappier Gmail interface enabled and you're ready for some tweaks courtesy of scripters far and wide, hit the jump for the Better Gmail 2 Firefox extension download. (Download at lifehacker)

Translation: It adds cool little features that you don't necessarily see right away. It's just some tweaks that makes using Gmail a little easier (to think - that was possible). I downloaded and am still playing with it, but I like it so far.