I'm selling my signature on NetBuilders (3,341 Posts) and DigitalPoint (2,157 Posts). Almost 5,500 posts!
One signature link sells for: 50$ per month (Pay 10$ extra and I'll add your link to my signature on 16 other webmaster forums! ). Bulk prices are available.
My avatar sells for 35$ per month on 18 webmaster forums -- this is your chance to get extra exposure to your website!
Payment goes through Paypal and prices can eventually be discussed.
You can either PM me or leave a reply!