I am confused in placing an ad, because last week I changed the design of my site. Can you review my site and suggest me about where to place an ad? Thanks in advance!
If I were you I would first do some serious improvements regarding the design of the site. Also - it appears that your site's main point is promoting products. In this case, adding ad-sense is the last thing you want to do. All you achieve is sending away potential buyers for a couple of measly cents - don't do it.