Another possible use is for a household where two people share a computer and both are members of your forum. Routinely I will see them post as the other person by mistake. And sometimes they ask if they can both just share one account to keep things easier. (Logging in and out can be a drag after awhile.)

And so with this hack, they can request to be "linked" and then they can more easily switch back and forth between the two accounts.

Very useful for users when using gimmicks. I can dig it.

One minor point, and I'm sure this is fairly obvious, but it's worth mentioning in case someone's unsure: once the accounts are linked, the notion of "cookies" and "logging out" of one account no longer applies.

It works great when it's one person logging in/out of two or more accounts.

However, if in fact it is two different people on one forum, with linked accounts for easy switching, and one of them logs out... the other person can still just switch right into their account. (Since the accounts are "linked" it does not ask for that password again, even if one of them logged out when their session was done.)

SO... be sure you're okay with this before using it for two separate people. A husband and wife may enjoy the easy switching back and forth, but the price for this, is the inability to "log out" for sure. (Either spouse could easily log in as the other and read PM's, etc.)

Psionic Vision, is there any way to modify this so that it respects the login/logout cookie for each account?

Ok, I loged out, now I can't log back in. Even after dumping cookies. So something is not right with this.

It's working for me, must be something wrong with your cookies. Try dumping them again after you close all your browser windows.

Are you replying to me or JumpD? Am I correct that if one of the linked accounts logs out, the other still can switch right in?

Seems if you log out you have to log back in using the account you logged out as.

I'm going to look into the logout bug.
But please, give me the exact steps require to reproduce the problem.

Works fine for me. Love the hack.

*clicks install*

Oh, the only thing I can see needed, is support for vB CMPS. You have to be on the actual forums for it to work, or you don't see any linked users in the drop-down.

Not that big of a deal though.