@Robocrop - If somebody would give you the free premium custom developed theme without a footer link I would be very suspicious about what he is doing and check that theme's functions.
We do have a footer link on our themes that you could only benefit from. The clicks to our sites are tracked, and also everyone who is using our themes on their blogs would get an instant link back on our respective niche site (directory section).
If you do use our themes, hit us up here -
http://www.blownetwork.com/contact-us and with your url's and we'll give you a permanent link from our sites!