What is "plentyoffish"

PlentyOfFish (POF) is an online dating service, popular primarily in Canada, the United Kingdom, Ireland, Australia, Brazil, and the United States. The company, based in Vancouver, British Columbia generates revenue through advertising and premium memberships. While it is free to use, PlentyOfFish offers premium services as part of their upgraded membership, such as who has 'liked' a member through the service's Tinder-like MeetMe feature, and allowing users to see whether a message has been read and/or deleted.