From the link you cite:
"There is currently a rulemaking proceeding that aims to improve the regulations on UAVs. It will take a while; indeed, you shouldn't hope for anything before 2010-2012. "
In other words is waaaaaay out of date.
Since then there's been a court case which proved the FAA's purported rules about UAV operations aren't worth the paper they (aren't) printed on; they don't exist. So as of now there ARE no rules affecting UAV operations in the USA; until the FAA get their arses into gear and go through the notice-and-comment rule making procedure, both amateur and commercial UAV/drone use is legal and unregulated in the USA.