As an example, I setup an NTP server a while back and found they used Bitcard.org as an authentication manager. I've been using it for years now and aside from the note on their website about running much of Perl.org, I've never heard of it being used anywhere else.
It's probably a reasonable service but I'd never implement it on my website because I know I'd be telling customers to go off and setup a Bitcard account, which they would have never heard of.
It's probably a reasonable service but I'd never implement it on my website because I know I'd be telling customers to go off and setup a Bitcard account, which they would have never heard of.