It's captured at the point of update, and it's "whatever the client developer specifies as the client name", with a threshold of I-think-50-uses of the client (not the version) for it to be shown on the stats page. (Trivia: I am directly responsible for why there's a threshold for client name to be shown on the stats page, and no, not because I programmed it. *g*) So, that's 82 individual entries posted via Semagic, not 82 individual people using Semagic, in the last 30 days, and no uses of any other client passed 50 entries posted with it in the last 30 days.