AJ Vaynerchuk

I can’t stress the importance of being involved in your niche’s community. Blogging at its root is communal, and if you aren’t involved, you aren’t any good. Creating relationships and adding credibility to your name/brand is almost as important as the comment you produce.

A simple comment signature at the end of your blog posts on other blogs can send you targeted quality traffic. I wrote an extensive article on this subject, check it out if you get a chance: Blog Comments Are a Great Source of Traffic