Using F/OSS and Unpaid Experience to Find a Job?

andphi asks: "How has volunteer F/OSS experience helped or hindered Slashdot readers in finding paid programming jobs? I have been involved with a F/OSS game engine development project (Adonthell) for a few years now. I've become the primary story and plot developer for the project. I hardly even look at the code, though I do try to follow the traffic on the developer's list. I've learned C++, VB6, Perl, IA32 Assembler, and exposed myself to a great many other languages (JavaScript, HTML, XML, SQL, C, awk, sed, bash, etc.). But I wonder, what can I do to sell myself using my post-graduate project involvement?"