Would you listen to a reader's advice ? My own two cents...
I visit a lot of blogs everyday and bookmark quite a bit. Purely out of interest. Anyway, I won't ever return to a blog if :
1) There are to many ads or pop-ups : I noticed that a lot of Blogger start off with a great template & design, put in their ads, sign up to every social networking and just wait for people to show up. Hello...? Content, anyone ???
2) The posts are Payperpost or other similar system. I'm currently reading a great blog. The woman started off with a great main topic, really got me addicted. It's been two weeks that she just stopped creative writing and only post payperpost. I hate it. I'm feeling used. She gained my readership and now I have to stand here listening to her blablaing about some product. I won't be on the blog anymore, trust me.
3) Rarely people admit they put too much ads. But 75% of them do, in my own experience. You think it won't bother your reader - it does.
I don't have any ads whatsoever on my blog, it's a personal choice. I hate ads. I respect people who try to make money with their blog, but set a limit and stick to it. This whole money-making blogs are really getting too much.