A German documentary analyzed the market and uncovered multiple problems of online dating sites.
Amongst them are "romance-scamming" (persons registering on the sites to get money from people falling in virtual love with them), using controllers or animators registered with multiple fake accounts, using unexpected and sometimes unlawful conditions in the terms and conditions leading to longer contracts a client intended to sign.
Some sites provide free registration, but may offer services which require a monthly fee.
Other sites depend on advertising for their revenue.
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. By 2007, many prominent studies show that Baby Boomer interest in online dating have soared.
However, market share was increasingly growing by several large commercial services, including Personals. Some online dating websites provide webcam chats between members.
The highest scoring dating service was Facebook, which uses the personal homepage genre, the message board genre, the weblog and directory genre, as well as utilizing the Circle of Friends.
The marketplace metaphor may also resonate with participants' conceptual orientation towards the process of ﬁnding a romantic partner.In Germany government financed NGOs like "Verbraucherschutzzentrale" sometimes help to sue online dating sites.This problem is referred to as "catfishing" in pop-culture and has been made famous by a popular MTV program called "Catfish the TV show".Apart from the popular social networks, there are social websites meant just for meeting and talking to someone new.3 popular and effective websites are: Plenty of Fish, Ok Cupid, and (where you can meet someone that has a similar taste in music as you).
Some sites such as Ok Cupid.com, and are free and offer additional paid services in a freemium revenue model.