The open source business model

Seth Godin explains it perfectly this morning:
You need to make something else abundant in order to gain attention. Then, and only then, will you be able to sell something that's naturally scarce.
Tim and I stumbled across this model by accident when we started our blogs a few years ago. Since then our business has been a 99% byproduct of the "free" stuff we are doing.
-- Felix Geisendörfer aka the_undefined