The ReadSocial people are the same ones who brought us BookGlutton. They have branched out into new areas. Publishers should be looking at Readsocial carefully. It provides a relatively painless way to create a social network around their books, magazines, articles, etc. The network can flow across different reading systems and the virtual groups can connect down to the paragraph level. I think it would be extremely useful for such things as travel books and college guides.