I personally turned a sizable Stack Overflow rep and a higher (relative to the site) Hacker News reputation into a job, though I do not make $100K/year (which as a number matters more depending on the location of the job). SO and HN gave me a 'body of work' that showed off that I was passionate about my work, able to relate to others, demonstrate some level of technical competence, understand people's problems and provide useful answersclearly communicate solutions. And since the job is as a Developer Evangelist, these are all highly-desirable skills for that position.
I tweeted the other day that the perfect resume would be your Stack Overflow profile and your GitHub profile plus some other social interaction history like Hacker News or Twitter.
P.S. If this sounds like you, we're hiring.