everyone has different hobbies. there was a time when i knew what the forecast at night in much more detail than the day specifically for making plans for viewing the stars. most people don't know what the current phase of the moon is, but it's the face of my watch. most people (not on this site) don't know what the difference between [] and {} would be. how many people know what the term top dead center references? how many people actually know that there's a proper term for the sideline on a football pitch other than sideline? how many people know exactly how many episodes are in DBZ or One Piece? on and on and on

Dr. Clark is pretty active on Reddit. He's helped me process astrophotography data in the past, particularly when using DSLRs

http://reddit.com/u/rnclark