This one allows you to login without entering your Twitter username and password each and every time as before. Here’s what you’ll see when you access the new TweetChat:
Once you allow TweetChat access to your tweet account (one time deal) then all you do is enter the Hashtag for the topic or chat room you want to enter. For example, AmericanIdol.
You’ll then wind up in an auto-updating TweetChat room with every tweet that refers to that hashtag. Also, the hashtag is automatically added to your tweet whenever you post something from the TweetChat room.
That’s all there is to it really. Quick and dirty chat room for twitter hashtags.