Hi. Please review my site http://www.emathhelp.net/notes?nid=41 I have links in the left sidebar and two blocks: one after first paragraph of the content and another at the end of the post. Is this a good ad placement? Do I use good color schemes (colors of adsense a slightly darker then colors of links on site)? And want to ask what kind of CTR should I receive from this niche site? Currently I have 1-2% CTR. Thank you.
You have a very clean site and the ads are just placed smartly which are just blended in content. And you should praise lord that your are getting 1 - 2% CTR because there are people out there who gets only 0.2 - 0.3% CTR. SO the CTR you are getting is good.