Profiles created by real humans also have the potential to be problematic.For example, online dating sites may expose more female members in particular to stalking, fraud, and sexual violence by online predators.Most services offer digital messaging, while others provide additional services such as webcasts, online chat, telephone chat (VOIP), and message boards.

Further, the 2016 Pew Research Center's survey reveals that the usage of online dating sites by American adults increased from 9% in 2013, to 12% in 2015.

Further, during this period, the usage among 18- to 24-year-olds tripled, while that among 55- to 65-year-olds doubled.

Other sites target highly specific demographics based on features like shared interests, location, religion, or relationship type.

Online dating services also differ widely in their revenue streams.

Such companies offer a wide variety of unmoderated matchmaking services, most of which are profile-based.

Online dating services allow users to become "members" by creating a profile and uploading personal information including (but not limited to) age, gender, sexual orientation, location, and appearance.However, Sam Yagan describes dating sites as ideal advertising platforms because of the wealth of demographic data made available by users.There are mixed opinions regarding the safety of online dating.A 2005 study of data collected by the Pew Internet & American Life Project found that individuals are more likely to use an online dating service if they use the Internet for a greater number of tasks, and less likely to use such a service if they are trusting of others.It is possible that the mode of online dating resonates with some participants' conceptual orientation towards the process of ļ¬nding a romantic partner.Some sites are completely free and depend on advertising for revenue.