Well, in the few months since I added the PayPal button, I've only had one person actually contact me to pay for use of an illustration. It is easy for anyone to copy a jpeg and never contact me. That particular honest person eventually said they would just send me a check, since the PayPal site was having problems that day and they kept having trouble trying to use it. I discovered PayPal by reading ebay's website about how to transfer money over the internet, and PayPal was recommended. It seems to have worked well for alot of people. Basically, you can transfer any amount you want to from your credit card and/or from a bank account. It may simplify members sending a few dollars on a regular basis to Mudcat.