It was once stated that characters wouldn't post on comments because it would not be in harmony with the drama of the show "Daniel wouldn't post on a comment board where people are discussing Yousef" for example.
However it seems that maybe the creators are listening to the comment board's arguments that they are able to seperate fiction from reality. Today Nikki B posted on the comments board.
nikkibowerreport (send note) Says:
June 15th, 2007 at 1:32 pm
I’ve been on a spiritual retreat these last few weeks, but every day I move one step closer to the goal. Hmmmmmm
(It is true that Nikki posts her videos on youtube rather than revver, however she has almost certainly been made canon, her report lead Bree to Jules.)
Note (from~mm): Nikki B. now posts her videos on Revver (http://one.revver.com/watch/302726) but as in the real world they show up later than they do on YouTube).