Make the automatic "http://" URL addition an OPTION!
Go ahead - make it default to automatically adding http:// to the beginning of every address you enter - just give users an OPTION to turn the damn thing off! Seriously the only deal breaker for me right now - have tried several other systems. We work with so many different passwords it's ridiculous. Our passwords are for other things besides web browsing - we store server credentials, database credentials, and other special info. I understand and appreciate your desire to keep your product simple. Still think this should be an option - I personally find it to be an annoyance for my use case - but can see for the web browsing user it might be convenient.
This has been deployed; any url that has a protocol will not get overwritten!
The Digital Orchard commented
Agreed. This makes my SSH URLs look very strange when I view them. I'll also be storing MongoDB credentials, which has a "mongodb://" prefix.