Cost of dating online
It launched in 1995 and is now available in 24 different countries.
Members set up a profile, upload photos and can then search through profiles to find a good match.
More traditional sites may offer anything from a simple search to a highly specific advanced search.
Some more seriously minded sites request that members fill out elaborate compatibility questionnaires.
Examples within this category include Jdate for Jewish singles, Geek2Geek and Farmersonly for farmers and the people who want to meet them.
Some of these niche sites are Farmersonly.com, Millionaire Match.com, Geek2Geek.com, JDate, Dandy, Pinksofa.com, Christian Mingle and Positive Singles.
Depending on the dating site, all other members might be able to see your profile and message you.
There are several sites that offer additional levels of security including background checks and photo verification.
These sites have the broadest appeal and generally the largest membership bases.