One challenge I have with all these logins options is that it becomes hard to remember which provider you logged in with. We have an issue already with Faceboo

One challenge I have with all these logins options is that it becomes hard to remember which provider you logged in with. We have an issue already with Facebook connect and standard Django auth of duplicate accounts for a single user being created. Often times merging these can be rough. Has anyone come up with an elegant solution to this problem?