Hmmm ... depends ... if they re blending well in content page then you will get a higher CTR. If not probably all will skip your page... Try to put 3 square ads in the place where you have a lot of content ...
Regards
Higher CTR is all good, but how about over all earning? If you display a bunch of contextual ads on one page, then the page includes cheap ads as well as expensive ads. How does this affect over all earning?