Want to avoid advertising?
We definitely want to expand the whole social networking side of Eat Your Books. I'm not sure whether Twitter followers of EYB (who aren't all EYB members) or Facebook friends would want to see every comment added to a book or recipe. Though as you say it would be good if EYB members could share what they post on EYB externally. We are definitely thinking about how we can both use the network within EYB to share comments and also how they can be shared on social networks outside.
And you have a search engine for ALL your recipes!