I am getting the Backflip. It is my first Android phone. I dont care about the 1.5 OS, but I have some questions: 1. GPS: With the GPS in it, are there any apps that use GPS-only, and it the Tom-Tom app worth it? 2. Constant Streaming of Data: When I tried it out in the store, it was roaming for data. When I turned that option off, it said to turn it on, it would cost a lot of money. I am getting the smaller 200 Mb plan, will that suffice for occassional Twitter and weather checks? Most of the time will be with Wifi. Any tips/tricks I should know about it?