It depends a lot on what your career goals are. Many startups seem to care about Github activity a lot. Corporations and less trend-seeeking small businesses le

It depends a lot on what your career goals are. Many startups seem to care about Github activity a lot. Corporations and less trend-seeeking small businesses less so. Though I’m sure companies exist that take StackOverflow activity into account, I’ve yet to encounter one. My impression is that participation on these sites only matters if you’re an outlier, and that it mostly gets you incoming inquiries rather than helping to have on a resume. If you’re the creator or major contributor to a well known open source project, that will absolutely open doors for you at certain companies that use that project. Otherwise, participate in SO or put code on Github if it’s something you enjoy doing. But don’t force yourself to because you think it’ll have a major career impact, because chances are it won’t.