CenTel and Embarq tend to be in more rural areas. Not always the case, but in those areas cable generally doesn't go. Or in some situations cable is crappy. So 768k sometimes is actually a decent option...I'd much rather have 768k DSL than satellite of any speed. heck, if DIALUP went at 256k I'd pick it over satellite
Did you know over a year ago Japan launched a satellite internet service capable of 100+ mbit/s speeds so rural citizens could have fiber-quality speeds?
Now don't say satellite again or I'll slap you around with your choice of a dish or a WildBlue modem. Seriously, 1.5 seconds of latency = pull-your-hair-out-and-wonder-why-you-aren't-using-dialup.