PSA: you should probably cancel that MemoryUp Personal download from the Android Market. Like, right now. According to legions of T-Mobile G1 users who gave the program a go, it's pretty much an abject disaster. The app bills itself as being "a handy memory optimizer tool that will keep your Android smartphone running faster and efficiently," but more than a few users have reported that it actually wipes oodles of precious data instead. Reports ranging from cleared SD cards to completely erased contact lists have appeared time and time again, with many straight-up calling it a scam. We're not looking for Apple-like safeguards on the store or anything, but maybe a test or two before letting this thing fly would've been nice, no?