Zoosk, which claims to be the largest social networking-based dating site, has more than 50 million members in 60 different countries and in 25 different languages [source: Zoosk]. Founded in 2007, Zoosk's growing popularity is clear, as it reported a 250 percent increase in profits over the previous year and generating $90 million in revenue in 2010 [source: Rao]. It was also named one of The Wall Street Journal's top 50 venture capital-backed companies, due to its use of integrated social networking and mobile technology [source: Debaise].
Zoosk is interesting because it's designed to combine your Facebook account with your dating account. Zoosk encourages your friends to leave you testimonials (akin to recommendations) to your Zoosk page for all potential daters to see [source: Kelley]. Zoosk customers can interact right on Facebook as well, where suitors can send virtual gifts and flirts right to your Facebook profile.
Zoosk is accessible online through your computer and on your iPhone or Android. Both Zoosk's Web site and mobile apps are free to join, which allows you to set up a profile, including posting photos and importing your Favorites lists from your Facebook profile. However, if you want to chat or e-mail with other members, you'll have to upgrade to a paid membership. Once you pay, you can contact any other member, answer e-mails, chat online, see you viewed your profile, send virtual gifts and more. Paid memberships range from $29.95 a month to $74.95 for six months [source: Zoosk].