Maki has another interesting tip to market your website or blog on a shoestring budget – Hire an experienced forum poster:
Contact high profile forum members with large numbers of posts and offer to either buy their signature link or get them to mention your website in forum threads.
This can easily create regular buzz around your site. Note that both the forum poster and yourself must be comfortable with the ethics of this marketing tactic and disclosure should be something mutually agreed upon by both parties.
How to Promote Your Website with $100: Four Budget Marketing Tips