Micropayments for Mac software.
David Watanabe is exploring new Mac software business models:
I wanted to see if donation-ware could work in the Mac world. The unforunate conclusion has been that it does not. I do not want to make the same mistake with Inquisitor 2.0. Absent any other alternatives, I have decided that Inquisitor 2.0 will experimentally released under a pay-per-download model. That is, users will have to pay a trivial $1 or $2 levy to download the software, in an attempt to recover the development expenses and time that have gone into this.
Update: Coincidentally (or not?) John Gruber has an article today about the life of small-time Macintosh software developers.