This paper seems destined for SSRN success: What Makes You Click? Mate Preferences and Matching Outcomes in Online Dating. From the abstract:

This paper uses a novel data set obtained from an online dating service to draw inferences on mate preferences and to investigate the role played by these preferences in determining match outcomes and sorting patterns. The empirical analysis is based on a detailed record of the site users' attributes and their partner search, which allows us to estimate a rich preference specification that takes into account a large number of partner characteristics.

Hat tip: ProfessorBainbridge.