There was another thread about this a while back. Someone on here recommended a password manager and explained why it is better than the one I've been using, which is RoboForm. Pretty informative thread. I've done a search under "password" to no avail. I think it might have been a thread that went off topic into password manager programs. Maybe someone on here will remember and give a link.
This isn't the exact one I was thinking of, but it might be helpful:
How Safe are Password Manager Sites