I think there is a bug traveling around the MB. I noticed that some people's accounts aren't showing up on the Members page and no longer have profiles. I found this happening to Riverglade, Stormsun, Embermoon, FableFeather, Iceberry, Lightray, Dragon, Skysun, and Rosefeather's profiles, but I am sure it is happening to more that I didn't notice.
The same thing happened to me earlier today. When I tried to log into my account, I got the error message "access denied by site owner". I emailed Jennifer and she was quickly able to fix my problem.
Just be aware that the people named above aren't being silent on purpose and that it could happen to you.