Good option for B2C services that are not that important (pretty much most of them actually :-)). Email delivery problems is a factor that needs to be consider

Good option for B2C services that are not that important (pretty much most of them actually :-)). Email delivery problems is a factor that needs to be considered though. Stolen "remember me" cookies is another factor... The password stealing malware will start harvesting those cookies instead of passwords (it's already happening in some cases).