I have had a few inquiries recently regarding photos of mine.
They have asked about usage rights for using them online or in direct mail campaigns.
What would you guys charge?

I have done research online and come up with a few things.

this seems like a pretty cheap rate for infinite web usage. photohome.com/website-rights.html
I really like these guys layout and rate table. They seem to be pros at this. www.avgphoto.co.za/rates.php
another reasonable site. www.pcimagenetwork.com/light/free.htm

Right now the photo in question is this one. It will be used on a direct mail postcard campaign for real estate industry.
oaklandmofo.com/blog/
Feel free to share the link or digg it. Tiz my new blog there.
Just launched it this weekend.