ah... thanks a lot!
Last question. LOL I knowwwww, I am killing you here.
Is there a way to limit the size of the images that users get to upload to their signatures?
Follow message moderation rules means the user will follow the rules set for the node (forum).
If a node has "Moderate all messages posted in this forum" set in its options then setting "Follow message moderation rules" to Allow will mean that the user will have all posts in that forum moderated. (Not Set(No) means their posts will not be moderated).
If a node does not have "Moderate all messages posted in this forum" set in its options then setting "Follow message moderation rules" to Allow will mean that the user will be able to post without moderation (Not Set(No) means their posts will be moderated).
The second example is how many folk will probably have their forums set up.