Spambook Cleaner
Did you go and join too many Facebook groups and events like I did? I do it on purpose myself to help people find each other and get together but GOD does it make a mess in my inbox. I finally broke down and wrote this little bookmarklet script that just deletes them all. I like the messages I get sometimes from groups and events but when I need to get to an important message from a friend and it's four pages deep in messages, well that sucks.
So with no further delay, the bookmarklet itself: Spambook Cleaner. Drag that bad boy into your bookmark toolbar and next time you're in a Facebook inbox full of group messages, just click it till they are all gone. Problem solved.
The bookmarklet works in Firefox and probably Google Chrome and Safari as well. I am not concerned about catering to Internet Explorer users anymore. There are plenty of real browsers out there to be had and there's no excuse to be using Internet Explorer anymore.