I must agree with Karen that this is a fairly new portion of this web site so it has not gotten very active yet. I am sure it will get more active.
As far as other cruise boards there are many of them that you can find if you do a search. cruisemates cruisecritic and cruise-addicts to name a few.
If you need faster information you may want to try these boards right now but do not give up on this board. People who post reviews here are very knowledgable and once they see this chat section I am sure things will get much better here and much faster responses.