Day job: Senior R&D Developer
What is your language of choice: Java/Clojure
Open Source contributions: lambdalf, maven-alfresco-archetypes
How do you use GitHub: All the OpenSource code I can possibly push in there, \
                       my personal CV, \
                       snippets and sample projects backing up my blog posts, \
                       keep myself up to date with tons of OpenSource projects, \
                       meet fellow techies, \
                       earn badges on some other social coding sites, \
                       give extra points to interviewees with an in-shape GitHub account.