I just ran across this great alternative to pop-up in-your-face push notifications that has great potential and many possible uses. It's called GriP, it offers a growl-like notification for the iPhone. Currently it only supports notification for new emails and high CPU usage. It uses all apple approved APIs, and script can easily be written to give it support for incoming SMS and push notifications. It is still in it's early stages, but it has worked flawlessly for push email. I am definitely going to use this as a replacement for pop-up notifications, it is much better than having a disruptive box pop up that disrupts work flow. Growl users will love this. As of right now it is for jailbroken phones only. What do you think about it?