They also measure the effectiveness of different profile elements.
Externally, they pay attention to discoveries by others key players within the market, especially Ok Cupid.
Ok Cupid, an online dating site with over 3.5 million active users, taps into the massive stats that are collected in its server.
And good luck getting responses from those who haven’t accessed their profile in more than three weeks; here your response rate plummets to almost 0%.
Messages sent to people who had simply viewed a client's profile were just over 80% more likely to elicit a reply.