Gazing into the swirling whirlpool of online dating might discourage you from stepping into it. But in reality, the same-sounding offers about the No. For example, the former presents you a deep personality test, while the latter organizes live social events. Knowing the differences between them could help you choose the right one. The site uses a multi-leveled personality created by a renowned anthropologist, Dr. Helen Fisher, to evaluate your characteristics.