ive read about rooting your phone and how awesome it is, and while i am like a hillbilly when it comes to technology i was able to root my vibrant. Afterni did the question came to me, What exactly does rooting your phone do? I looked at the superuser app and it looks very foriegn to me. Also is there anyway i can expand my ram or cut back on the ram being used? even when i have no apps running?