If you’re one of the many people that uses Firefox and has a ton of pictures, videos, and attachments sitting disorganized in your massive Gmail inbox and/or archive (and don’t mind linking your account with a third party site) then the Xoopit Gmail plugin addon for Firefox is for you! It categorizes all of your media and allows you to search through it by date, sender, media type, etc. I’m finding it quite handy. The XoopIt service is in private beta right now, but I was able to get in using an invite from Mashable. A limited number of invites are also available from Download Squad and Lifehacker.