Ok those 1000 impressions give you $1.80 or whatever. A few questions about them: 1) I see sites like: http://www.squidoo.com/squidooprofitsguide (see how there are 2 different ones). Is that allowed from 1 site, or do I need to sign up for multiple sites in order to do that. 2) Can I use 2 - 250x250 ones instead of using banner size ones? 3) Which sites would you recommend me using to put those into? Which 2 I guess if I need to use 2 different sites. (Highest paying is important, but more important is most reliable ones, ones that pay on time and have a good track record).