I’m guessing that we are around 1% of the general population 😉
Not enough for a big company to build a community on though. Of course, it would have helped if Google hadn’t restricted sign-up. Just because it worked for Gmail, but a social network is a different beast than email, that already had a critical mass of users.
Ah but when the prices can’t go any higher they can always remove content, paying their suppliers less and getting cheaper hardware. I wish I was joking but these are the options that are left.