The first one is adwoff, a message board by and for fans of Nora Roberts. Nora stops by there regularly and I enjoy chatting with others who also like her books.
The second board I'm a member of is the SEP message board. The board is part of the homepage of Susan Elizabeth Phillips and a great place to meet other Seppies. SEP is around most days and it's always exciting to hear about her writing progress, etc.
On both boards I have made friends and although I'm not posting all the time (I'm really not that social :)) it's always nice to talk with other people who love books in general and both authors just as much as I do. Of course there are sometimes also people who I don't like but I think that's normal.
I'm curious and want to know if you are a member of a message board of/for an author. Have you had good experiences or negative ones?