I have unsold inventory available starting at $20/mo on Tutorial9.net, a popular tutorial blog for Photoshop, Photography, Illustrator, and Web Development (SEO/Blogging/etc). Tutorial9 is a member of the 9rules network, and is a top blog in it's niche. We have over 5,000 subscribers via FeedBurner, and see 8.5k U/V's a day. I sell through BuySellAds. All pricing/sizes/and availability can be seen here!