niche site

I would like to get some ideas on how to pick the right niche, I have my own ideas but would like some more ideas from others. Does it have to have small advertiser competition, and around how many searches are good from smallest to highest, or can it be a big niche, and rank good for a...

ok i am new (obviously hence my begging for knowledgeable help. Anyway i am into niche adsense site. i have a few and i have been able to get them ranked in the top three for a few of there terms..but i have not been able to do much more than that. i believe i made it that high in the serps with...