OkCupid was promising at first. Great question system, letting you screen through profiles based on personality. However, the business model creates a "window shopping" experience, at best. You get many likes, but the algorithm will ration them to make you pay. The lack of scarcity creates conversations that'll lead nowhere, since the goal of the app is validation. My first match summarizes the experience : she had so many unread messages that the app wouldn't let me engage the conversation.