I've just upgraded to tweetader 4.0 on another machine, an boy-oh-boy we're in for a shock. For those that haven't made the jump yet, the main change is that automation is all but gone.
You can no longer automate follows, unfollows, searching of follows etc - each follow has to be done manually.
They're also switching to a monthly subscription based plan, so if you want to continue using it now is a good time to get an unlimited licence.
Apparently everyone is going to be forced to update too.. TweetAdder 4.0 Announcement | Twitter Marketing Software - Twitter Adder - Professional Twitter Marketing Tools - Automatic Twitter Software - Automate Twitter Posts, Auto Twitter Follow, Automate Unfollow, Mass Tweets, Twitter Search, more ..