After much thought, I have decided that it is a good idea to keep members from changing their aliases on the fly. From now on, if you wish to change your alias, you'll have to ask me to change it for you. Many of you wont care about the alias lock since you planned on keeping the same alias the whole time anyway.
Edit: I've added a new feature to the forum to allow people to quote other's. It's really really simple though.
