As TechCrunch suggested earlier in the week, Twitter announced a few new features today: improved search on hashtags and usernames, and a Twitter-branded image/video sharing service that may disrupt established players like TwitPic and yFrog (the back-end for Twitter's service is provided by PhotoBucket). The photo service will be live in the next few weeks.
The company also announced a partnership with Mozilla to deliver a custom version of Firefox that does Twitter search in the loc
