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And after you emailed them you could finger their address and see when they last checked their email, and their unread message count usually.

• giancarlostoro 2y ago
  I had no idea this was a thing for email... Wow.
  • layer8 2y ago
    Only for Unix accounts.
  • sedatk 2y ago
    Not just that. People had ".plan" files that could be viewed with finger, and they would post updates there. I specifically remember John Carmack sharing daily news and updates on his account. It was the first form of "Twitter" back in the 90's.