DD, it's all helping together. The forum is very new and has not hit critical mass, but I consider it successful. Lately I have had people signing up who said they read about it in the book!
The book is still selling well - even for money - and I now have a print version. This was done through Amazon Createspace, so it is sold all over the world and available on Amazon and elsewhere. The print version is $5.99, but I actually make more money on the digital copies which are $2.99.
I am selling at least twice as many as my best expectations. I am pleased.....and not going to complain about the extra money either!
If we only had a killer wiki-like Pages addon where power users and admins could create the content for your next books for you.
Think about what this ebook experience taught you .... and figure out how to get the community creating content for the next ebooks (or even just version two of your current e-book).