This is one of the most labor intensive types of campaigns you may ever put up. However if you find your self paying 1 to 2 cents per click then you will know it’s worth it (granted you are converting). The idea is to completely research what the product is you’re going to be promoting. This is the single most important aspect of this type of advertising. If the product is no good and you dont have a demand, then you dont have a campaign. This is not like Content Network Campaigns, or setting up ads in Yahoo or MSN for quick testing. When you are dealing with a placement campaign on Google, it can often take half a day to get your ads to stop running. I’ve personally seen it take almost 24 hours before. If your paying $5 per 1000 impressions and the total of your placements is about 200,000 uniques a day and you have a shitty product/offer that wont convert….you see what I am saying here? It can be a runaway train.


Read more here