Where can I post a link to my Disney/theme parks message board. For example which mesage boards can I post my link ( http://pub101.ezboard.com/bcoasterworld ).

I think you already picked the best forum for it, the lounge.

I don't think we mind people promoting their own (non-commercial) Web sites, but only do it once and then as appropriate for the flow of conversation.

To continually promote it, I suggest putting the URL in your sig and then actively participate on our boards.