to each his own, but what okcupid might be aiming at is something similar to comments-->leading to blog posts (if I strike a chord with your concise comment at

to each his own, but what okcupid might be aiming at is something similar to comments-->leading to blog posts (if I strike a chord with your concise comment at HN, I would be more inclined to check your profile and follow links to say your blog etc and read more.. similarly for dating sites). this is like the trailer->movie effect which is an effect of short attention span and saves time.