Sure, but I think that for that to work, you have to tone down the dating parts of the site and emphasize the matchmaking parts of the site. Basically, a site

Sure, but I think that for that to work, you have to tone down the dating parts of the site and emphasize the matchmaking parts of the site. Basically, a site that is good for hookups or dating makes it very easy for users to quickly browse through the other users' images. The best ones I've seen basically lets you make a (detailed) search, then just shows the results one by one with a big NEXT button on each. No lists, no clicking back and forth, no popups, just a very simple flow through the results. But matchmaking needs a workflow that is more refined and feels less like a flesh-market. In the market research we did where I worked many years ago we found out that matchmaking appeals to people with little time. They don't want to spend hours browsing profiles, they want to be fed a slow stream of new profiles that the system has decided is good for them. This could possibly work with book taste as a base. If you make a recommendation engine like Netflix or Amazon, you could then grab other users that actually liked the books and have that as a starter. "User X shares your taste in books, but hasn't read book Y, why don't you tell him/her about it?"