add everyone who's a republican you can on facebook and write notes linking to pro-paul blogs and video with very catchy note titles.
It's non-intrusive since it only shows up in there feed, but that enough to get a lot of people attention, I've gotten 30+ people this way, justby posting a note of every juicy blog or video I see. When they see the name Ron Paul over and over again in their feed they will eventually check it out.
This also works for any bigger Ning.com networks, since they also have activity feeds. Myspace Bulletins are good for this too, non-intrusive, but fairly visible.
BIG PLUS: it's free