Which is the best paid....

[debasis]

Hello friends I want to make a blogging site where all people can join but not yet decided when to start working on it, before starting it I need your suggestion that whether to start it or not.I also don't know which ad to put etc.. and on which topic the blogging site should start etc...waiting for your reply, I need everybody reply.
Thanks.

rather than asking here, you may search on other reliable forum about how to make money by blogging

Thanks for ur suggestion but this is also a good forum and its all members are very experienced in it so I just the suggestion.I am not asking how i will earn from it i have told that i have not decided which ad to add in my blog if i start it in future and what your view point towards it,that's it...