Use channels and always test . No point keeping that 3rd adsense block if you can make more money with just 2.
What if u dont use channels for some ads, Is it possible that google will remove the money u recieve from those ads not in a channel?
just wondering... my tip would be don't be tempted to get into click fraud. They will catch you eventually... they see it a thousand times a day and know all the tricks.
Yes and those doing click fraud need to be careful. Because logic suggests its as easy to find them to. So if you think your hurting your competitor, you will end up hurting yourself. I would like to point out its illegal and you can be prosecuted for click fraud aswell.
Put on the quality and relevant content on your site and bring lot of traffic to your site from various web directories, search engines, social bookmarking sites and by making relevant comments on other people site or blogs with your site link
It's not rocket science, but at the same time, it's not simple. There are people who have been doing this for a year and still make less than $10 a month. All the advice you'll need are on this board, but the effort is something you have to find yourself.
Traffic is the most importance I think.No matter what the best your sites are but if noone visited it, It mean nothing
Having good content also helps with traffic. People will tell other people about your site if it's good.