Re: Open Source monetary contributions
in a lot of cases, if there's a non-profit organization (or for-profit, for that matter) that can fund it, that's one way to do it. Your dev work is billed to the foundation/company/whatever.
actually that'd be a nice way of getting an income, for popular tools, even if it's just for weekend work. but I'd guess that [unless a company has a direct interest in the tool's success] it's generally done as volunteer work because the dev wants it.
yeah open source revenue models are somewhat unique in that way...