There have been pretty decent unofficial hacks to get Google Voice fully functional on a variety of mobile devices for a while now, but Google's finally taking the next logical step in its world domination strategy by releasing totally 100-percent legit first-party apps for a couple key platforms today -- BlackBerry and, of course, its own Android. As you might expect, the app lets you make calls and send texts through your Google Voice number (great for taking advantage of its mega-low international rates) and integrates with the service's excellent visual voicemail and voice transcription service. iPhone is o
