It’s great having a flat CPM rate on ads. This means that every time an ad is displayed 1000 times you get the CPM rate. This is great because no one has to click the ad at all for you to make money. Most 3 party advertising companies do not offer a flat CPM rate, but if you can get one go for it! I experienced great success when ThinkComputers booth babe gallery hit the front page of Digg. I would say less than 10 percent of users click ads on our page, but if we are running CPM ads no one has to click the ads they just have the view them. So with a front page digg there was a ton of traffic and with that traffic came a lot of ads that were viewed. Right now we have a flat CPM rate with Vibrant Media. Just to give you an idea of how well a CPM ad performs compared to something like google where your CPM is dependent on how many people click the ad, we would average about $15-$20 a day on Vibrant, the day of the front page digg we made $250+!! That’s a huge jump! If a review of ours makes it to the front page of digg the google ads do well, but only make a $20 or $30 more than normal, not to the effect of what we saw with the flat rate CPM ads that we have with Vibrant. If you are able to get a flat CPM rate with any advertiser than I would take the offer, unless its under $1 CPM.