If you've been on the internet long enough, there's a good chance that you're on a few mailing lists that you never read; it's usually easier to just delete the messages than unsubscribe. You don't have to put up with those forum summaries and sales offers any longer, though. After a quiet rollout, Google has officially launched an "Unsubscribe" button in Gmail's web interface. If there's an unsubscribe link buried in a message, the option will automatically pop up next to the sender's address -- click it and the clutter should disappear from your inbox once and for all. This likely won't help with those spam-happy types that make it intentionally difficult to unsubscribe, but it could still let you focus on the email you (hopefully) care about.