I do this web site mainly as a hobby.  It's a subject that interests me, and I enjoy sharing what I've found with others (yes, believe it or not, there are more than a handful of people in the world interested in Combo Organs!).  The cost to maintain the site (other than my own time and energy, which I freely give from what little I have to spare), isn't outrageous, but as the site grows, it will increase (web hosting disk space is pretty cheap, but they don't give it away).  If you've found the information presented here to be useful, informative or entertaining, and would like to show your support in a monetary way, you can do so via PayPal.  Use the address "donations2 AT combo-organ DOT com"