My latest obsession: Gmail.

Gmail is like the coolest k, you can choose Gmail themes, upload up to 20mb of attachments, and you don't have to download save every freaking file on your desktop just to find out that you don't need them 5 minutes later when a newer version arrives. Plus you can add in a lot of other experimental functions like previewing youtube videos from your inbox etc. etc.

SARAH TAN, YOU WERE RIGHT (: