So happy was I, yesterday: I thought my emails were going to be pushed to my iPhone, thanks to GPush, something many users were waiting for.
Yesterday I bought the application and I had no problem configuring it. It's a pity that, since then, I just receive one (yes: one...) notification. After that, silence.
Tiverias Apps, GPush producers, states that they're experiencing problems with their servers and that their developers should have isolated the code paths which are causing the problems that we're experiencing. Just hope it's not a scalability issue: sending push notifications to a great number of GMail users seems no easy job to me.
If you feel like buying the app, please wait for these problems to be solved.
Update: GPush has started to work.