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I think you make a good point. But I also think that in high school, yeah, I want the guy who spends a whole lot of time in the park playing ball, because he's the guy who's gonna make it into the NBA. It takes a big time investment to get really good at something. So, do senior devs need to have a github account? Maybe. Should a junior dev? Definitely.

While not open source, there are free(mium) solutions like Tungle (or doodle, etc) do this quite well. Tungle even allows you to do this with people that aren't on the same exchange server

Disclosure: I work at Tungle

Actually, in idiomatic java, it'd be even longer:

You should make bar private, and add a setter. After all, we might want to change the rules on setting bar sometime, and you wouldn't want to have to go back and change everywhere that accesses it...

Montreal, Quebec. Tungle http://www.tungle.me/Home/careers/

We're looking for a C#/Java developer, and QA lead (python/selenium). Small team (under 20), smart people, and beer hour on Fridays :)

You should check out http://tungle.me, it's a much more complete product (calendar syncing, nicer UI)