The job aspect is pretty important.

Don't know if any people looking for employees do that, but I would hire a developer who writes patches, that are nice and I can browse them, to an open source project, instead of asking him to code a binary tree and insert on it on a technical interview or to read his CV.

Hopefully someday all those CVs will be obsolete, and people will only be employed by their open source contributions, I never liked writing CVs anyway :P