Mac users who use Twitter know that a new twitter client has recently latched for the iPhone/iPod touch called Tweetie 2. As of this post Tweetie 2 has been a trending topic on twitter and number 2 on the paid app list. 
The developer Loren Brichter of Aetbits, LLC has been a very popular person because of the firestorm of charging another $2.99 for his new twitter app instead of offering it as a free upgrade.
According one blogger on the Just another iPhone blog he says, "My thought is that this is a very,very,very Bad Call. I just can’t find a way to think of this as anything less than spitting in the face of existing Tweetie users."
Britcher has said in a recently MacWorld podcast that he designed Tweetie 2 from the ground up as a new app and there is no way to do a paid upgrade via the app store. Former "Who's the Boss" start Alyssa Milano a self-proclaimed twitter addict found out that it will not be a free upgrade and tweeted " Booooo!!". This triggered an uproar from the iPhone developer community that a celebrity would say this.
But Milano's tweet underscores the app store dilemma--no paid upgrades. That said, no paid upgrades on App Store is a major fail and as apps get older this issue is going to keep coming up. Developers like Brichter and others can't offer free upgrades for life. I am sure "Uncle Steve" will address this at the next apple gathering. This is the now the elephant in the room that Apple can't ignore.