Google AdSense is by far the best pay-per-click program. Highly reputed, well paying and easy to manage. They are also easy to signup, however, they are also the strictest when it comes to malpractice.
If any Google AdSense publisher is found to be involved any sort of activity that can generate invalid traffic/ clicks, the publisher is disabled and there is no second chance.
Another situation where a publisher would look beyond Google AdSense is when they are looking to fill the alternate ad url option of Google AdSense.
If any Google AdSense publisher is found to be involved any sort of activity that can generate invalid traffic/ clicks, the publisher is disabled and there is no second chance.
If you have any of the two reasons to look for a Google AdSense alternative, go ahead and try the below alternatives. All these are free to join.
Contextual alternatives:
1. Yahoo Publisher! (In beta, only for US publishers)
2. Chitika eMiniMalls
Non-contextual alternatives:
1. Chitika eMiniMalls
2. AdBrite
3. AlternateURL
Note that Chitika eMiniMalls is shown under both contextual as well as non-contextual alternatives. Like an amphibian... it is by default non-contextual, but it can be made contextual too.
There are several other services like Clicksor, Allfeeds, BidClix, etc. But the above listed services are recommended by us as they have optimum performance and good returns. Please note that some of the links are partner links.
In summary, before you lose out on Google AdSense, you may want to check out the products above that will help you to maximize your AdSense utilization.