I have a Japanese Kingston 1GB microSD. Are there any hard and fast rules when it comes to how many times or how often it can be formatted? I only recently got my R4 and I've already done it once when switching to a new batch of games and updating the firmware. I imagine I'll be doing this a lot for the next week or two as I try out new games, and to avoid corruption or fragmentation, I will probably format it every time. So would this have any negative effects on the microSD?