There was a very good thread about by Sinempire
http://www.gofuckyourself.com/showth...t=sinempi re. Basically cogent bandwidth is ok for tgp gallery posting and sites that don't really need to be on Quality bandwidth. They are losing their pier points more and more everyday, and are still in financial problems. If your a serious webmaster and are thinking longevity in the business I would stay away from cogent.
This is my 2 cents and I don't want to start a pissing match with all the cogent providers, Slick asked a question and I just gave my 2 cents.