https://marco.org/2008/10/28/i-have-no-idea-how-many-users-i-lost-due-to-the
I have no idea how many users I lost due to the several weeks of downtime, but I don’t think it was very many. There seems to be a corollary to the Twitter Effect that I’d call the Forgiveness Effect. It dictates that if a user enjoys a free service and that service is currently up, all past atrocities will be easily and quickly forgiven.