This isn't a big surprise, if anything it's surprising it lasted as long, but some thoughts/comments: > The reality is OpenID support has created a ton of comp

This isn't a big surprise, if anything it's surprising it lasted as long, but some thoughts/comments: > The reality is OpenID support has created a ton of complexity in our codebase I don't doubt this is true but I do find it surprising. I would be interested to see a breakdown of this from a technical perspective. I'm sure it adds complexity, but in the context of the overall complexity of SO I would have expected it to be relatively overshadowed. > Users have spoken with their actions. You prefer Google, Facebook and Stack Exchange (aka email/PW) based account auth. No, they haven't. OpenId use in SO has declined for two reasons: (1) providers shutting down and (2) Stack Overflow UI changes to hide the option from users in the login form (making my logins require extra clicks). > around one-tenth of a percent are actively using OpenID (defined as having visited a site in the past 12 months). If you include all the inactive accounts it is still less than 2.9% of all accounts. 0.01 up to 2.9 is a massive jump and seems to indicate a high active user turnover. I wonder what the user activity retention rates are on SO. What percentage of currently active users are very recent joiners.