1.RIGHT SIDE TOP CORNER The right top of the site has the first preffernce to place your adsense code.Because peaple are use their mouse on right side of the computer.So they are habituate to click and play on right side.So it has 40% chance to click on your adds. So if you put a wide scraper(160x600) on right side it can increase your CTR. 2.BELLOW THE CONTENT Generally after reading the content people think more about the content and searching more.So if you put adsense code just bellow the content it has 75% chance to take the information from the links in adsense.So obviously your CTR will increase. Generally it is a LARGE RECTANGLE or LADER BOARD. 3.ABOVE THE CONTENT Above the content put a horizontal add i.e; LADER BOARD.In general when open a site we look at the top of the site.So it is more visible place and best position to increase your CPM. SEE HERE COMPLETE ADD FORMATES ABOUT ADSENSE

Have you thought about where your website was hosted.Ofcourse you may know.But you want to know where the all famous sites hosted.WhoisHostingThis is a good site to know about this.

If you have look at the above image.Mine is blogger.So it hosts on google server.Go to the above site and search about your favorite sites hosting companies.