I completely agree with this approach as the most obvious and simple way to get involved. For some alternatives, I recommend you stop by the IRC channels of so

I completely agree with this approach as the most obvious and simple way to get involved. For some alternatives, I recommend you stop by the IRC channels of some of the projects you want to work on (like Mozillas) and keep track of the discussions they have. You can always ask the people there how you can help and, IMO, they are usually pretty nice folks who'd like your contributions, however small.