Ok, so... smartphone neophyte here (i.e., "cranky old guy"). I have both a gmail and google voice account, both of which I use pretty regularly. What features or capabilities does having these 2 accounts allow me to do on a Droid that I wouldn't be able to do if I didn't? I have searched here, but there's a lot of info and a lot of it contradicting, so I'm not sure what's real. Any help for the tragically unhip but willing to learn?