I get a lot of cold emails from my website, asking me things. I ask those corresponding with me to ask the questions on my BBS instead, so when I take the time to answer, the answer benefits more than one person, and there is increased ROI on the time and energy spent constructing a thoughtful reply.
Well hold up, I do 1:1s with people at least every two weeks, but I haven't actually breathed the same air as one of them since the beginning of summer. (We both drove to that empty building downtown and had lunch, IIRC.)