Comment by davorak

Comparing traffic, pre sale, of logged in twitter users vs traffic generated by those without accounts would give insight into what percentage of users have to take action to continue to use twitter normally.

I spent a 1-2 minutes googling and could not come up with numbers though.

I know I am part of the percentage of people that used to read twitter without an account, or at least not logged in, and now read twitter a trivial amount.