Dont buy traffic
get a PR done i had one done from a guy that said he would get me in google news, i thought to my self when he said this that it was a con so he said he would do it for FREE for me but i would have to pay for the submission which was only $30 the guy normly charges $30 for writting the PR but cos i didnt trust him he did my first for FREE
and yes it when in Google and yahoo news in the same day and its still there now i have been getting some good traffic and also its not like buying traffic as a PR will brand your domain more
i was well chuffed so now he is my full time PR writter