Originally Posted by NCommander

Bonus miles seem to be any miles you've purchased or gotten in a way that doesn't include flying.

Anyway, I think I found a way around the points.com problem if your willing to spend $25 dollars. Register a Frontier account (which is one of the few that worked for me), then buy 1,000+300 miles with them. Transfer 1,300 miles to 317 US Airways miles. I haven't tried this yet (hoping Icelandair or Asia Miles will start working), but if you need a hit ...