I wont do it. I did it in the past with Select, and others but no more.
I write software for Windows/MacOSX/Linux (a desktop database IDE) and PDA's (including freeware and faviours (a surf database to New Zealand and a car dealership Palm app to california). I charge when I have something to sell that I feel is worth it. I tend to find that if it is commercially viable it will be done and will sell. There are always a broad spectrum of opinions, some at one end and others at the other. It just depends where the majority are. If there are enough people willing to stump up the cash then fine. Just not me.
If it was shares in a commercial company then that is a different matter.