I'm new to Android (I'll have my Atrix tomorrow), and hearing all this concern about the locked bootloader has me questioning what an unlocked bootloader would actually get us. On a PC or Mac, a bootloader would let you install multiple OS's to your system and load any of them at will. It's useful, but I wouldn't be upset if I couldn't do it. I think I must be missing something. On Android how does this differ? I noticed there's already at least one custom ROM (GingerBlur) available and working on the Atrix, which means we can already run custom ROMs... What else is there? If the bootloader were unlocked, what more would that actually get us? 