I am selling a 480x60 ad spot in the header of my blog, stays on every page, high visibility. I charge $30/month or $80 for 3 months. The content rich blog provides highly keyword targeted reviews on mobile phones , cars , digital cameras , e-book readers ,printers... The blog is growing at the rate of 139% and has figured for 3,167 keyword (Webmaster tools stat) till now. The stats for last month - April - may Take a look PM me for the url or any further enquiries.