There are mixed opinions regarding the safety of online dating.Over 50% of research participants in a 2011 study did not view online dating as a dangerous activity, whereas 43% thought that online dating involved risk.Others utilize the freemium revenue model, offering free registration and use, with optional, paid, premium services.
At the end of November 2004, there were 844 lifestyle and dating sites, a 38% increase since the start of the year, according to Hitwise Inc.
In 2008, a variation of the online dating model emerged in the form of introduction sites, where members have to search and contact other members, who introduce them to other members whom they deem compatible.
Introduction sites differ from the traditional online dating model, and attracted a large number of users and significant investor interest.
Since advertising revenues are modest compared to membership fees, this model requires a large number of page views to achieve profitability.
However, Sam Yagan describes dating sites as ideal advertising platforms because of the wealth of demographic data made available by users.