it's called http://www.hackthesystem.com . The guide to getting free miles is the Travel Hacking Report. It also talks about how I get free offices in almost every country in the world.
Saw your previous comment and hunted this down. Just read the whole thing -- very, very cool. Regus Businessworld will definitely come in handy; $300/yr isn't bad at all, but 6 months free can't be beat! Nice job.
it's actually forever free---they say only 6 months, but the expiration is non-existent. I've been using mine for over 4 years!
Is this mostly with credit card churning or mile runs?
churning
Churning really depends on your credit. Shaphire and the high mileage cards require you to have a very good score and decent sized credit history.