I just learnt about some Adsense exchanges where you can pay a monthly fee and all the members click on each other’s ads for increased Adsense earnings! Do not join any such thing as this is certain to get you banned from the Adsense program. You may see increased earnings for a few days or months and then poof! You are out with all earnings not yet paid, frozen.
These illegal methods are not what you adopt to increase your earnings. If you want to earn more, create good content filled sites with some nice SEO. You can use the tips for optimising the Adsense ads that we have given in this blog. Play fair and you will earn for long!