You don't read what others write, do you? Otherwise you would know I returned my iPhone and have continued using a BlackBerry. As for your app; 1000s of happy customers??? I would suggest you look at your ratings as far more people are dissatisfied than happy with it!
That's because most happy customers don't write reviews. And I certainly don't think the app is perfect for anyone so a number of bad reviews is expected.
But please, even if you returned the iPhone, tell me why you didn't like the app, maybe I can make it better with your suggestions.
Why should I need to buy an app for a feature that is common on every other phone?
In the next generation of iPhone would I be able to, WITHOUT having to buy an app from a third party, select a GROUP, write just ONE message and when I click SEND it goes out to everyone in that group?
I don't know why Apple has not put the feature in the messages built-in app (well, I actually have some ideas).
You don't need to pay for the feature. I think some *free* apps with the group feature will appear soon. In fact the Lite version of ABContacts has the feature and is free (and if Apple approves it should appear soon on the AppStore).