We have an ongoing e-mail chain (that does get exhaustive now and again). Sometimes they get too conversational, but it's all good. A lot of quick reads and deletes. When something new or important comes up - i.e. plans for our next outing, statistics, details from our yearly tracking sheet, etc... - I just change the subject line. We don't keep track of too many individual statistics, but do keep track of yearly points, yearly prize money, individual outing results, groupings (so we can change up as much as possible). I'm the coordinator, and if I really need someone to get back to me, and they haven't in a day or two, I'll just give them a call.
As far as my kids, my son is 17 and heading off to college in the fall, so I hope to play with him as much as possible this summer. Started him when he was 10 or 11. He can't break 100, but we still have fun. My daughters are 13 and 11 and don't go out too often. I like taking them during Twilight at my local course, when it's cheap and usually pretty wide open. Wife complains that I play too much, but she lets me slide when I have one (or all) of the kids with me. I haven't really thought about playing in an organized family thing. Truth be told, my son doesn't like playing with others too much, as he gets nervous and sometimes embarrassed. He's 17, plays maybe 8-10 times a year, and thinks he should be a scratch.