On Google+, I post once in a while...
Usually pictures (that I've taken and processed).
Less often a personal/family milestone (often running related).
Other: I'm a programmer by day at Google. (Anything about this is super rare. Maybe once per year and if you follow Google blogs, I suspect you will have heard it already.)
Odd fact: I ran 4 marathons and need to start running again. I do it simply to be healthier and be more able to enjoy other things. I do like listening to audiobooks and music while running though.
My current running goal is to run a marathon in less than 4 hours. My best so far is about 4 hr 33 min.
Disclaimer: On Google+, I'm solely expressing my own opinions/thoughts, and in no way do I represent Google in what I say or do -- even if I happen to do something related to Google or the tech industry, etc.