I play a number of mmo's with cash shops and I've tried not to spend money over the years to play on the same level as paying players. Recently I found a pretty interesting site that allows me to pocket some extra cash for a about an hour a week.
It's called Varolo and the basic idea is that you watch TV ads and get paid via PayPal. You get paid more depending on how many of your friends you have referred that actually use the program, so it isn't to hard to have your earnings snowball. As with all legitimate companies of this sort, it is 100% free.
Anyway just thought I'd let you know about it and post a link below (you want the user tour not the advertiser one), feel free to ask any questions.