It would be great if both Squirrel and vBulletin share the same handle/password and new user can sign-up/change password for both within a single form.

For example that's only a sign-up form and a shared database for both scripts, then the intergrated email address will appear on forum's profile section by default unless user choose to display another email.

In fact it doesn't need to be any complicated, any simple hack that could intergrate both would definately be a great one. I'm sure many would appreciate and realise the usefulness and worthyness of this hack.

Hope this is a nice one