The first criterion that you should look for is the exchange rate. Good, effective exchanges give you 4 ads for every popup you show. The way they do this is by showing 6 to 10 ads on each popup.
These exchanges produce good, high-quality leads for your list. I have made dozens and dozens of sales with these leads. The key is to write very specific ads so the leads who subscribe know exactly what to expect when they receive your messages.
These are the exchanges that work very well for me and my partner:
http://www.optinstorm.comhttp://www.optinboom.comThis exchange is fairly good, but not as good as the two above:
http://www.subscriptionrocket.comThese exchanges are very poor for a variety of reasons:
http://www.listinferno.com
http://www.ezinefire.com
To use these exchanges, you join and put a popup code on a webpage. The exact code you need can be put on any webpage where you can insert HTML.
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Robert Eckert
Lead Generation Home///////////////////////////////////////////////////////