Did you know there was a web based twitter app that allowed you to manage your twitter account? If not check out CoTweet.com CoTweet is not just about having multiple users tweet from one account but it’s about managing your voice on twitter and saving you time to make sure you get the best value out of sending tweets and having productive conversations on twitter. We met the founders of CoTweet at SXSW and had a chance to talk to them about their product and challenges they face launching a twitter application. Take a look.