I don’t have this issue with social media because I don’t really participate all that much. Occasionally one of you guys gets on my case but hey HN are a rowdy sort so I take my punches :)
In terms of job interviews I can see where it would get hard for people. The best advice I ever got for that is to expect one call back for every hundred applications, one interview for every hundred call backs, and maybe one offer for every hundred interviews. If you expect that sort of ratio then it stops feeling personal and just feels like a numbers game.