If it's coming across as spam, I don't think they are doing it right:) I have friends that make a killing from SEO and they have blogs on Tumblr and cough Post

If it's coming across as spam, I don't think they are doing it right:) I have friends that make a killing from SEO and they have blogs on Tumblr and cough Posterous that they tactically use for SEO. They also spend hours writing the content.