Online dating once was something people had to keep secret, and was treated as the domain of people who couldn't get a "real" date.
However, according to Internet World Stats, Internet usage has doubled since that time, so the percentage of people using online dating has also likely increased.
Pew also reported that 18 percent of young people aged 18 to 29 use online dating.
"The Harvard Crimson" reported that college students are increasingly using online dating, particularly when they wish to avoid the bar scene and get into a committed relationship.
There's no specific profile of the sort of person who dates online.
College students from all walks of life try online dating, and Pew reports that 36 percent of all single people have tried online dating.
Online dating can make it easier to meet people, particularly for shy or socially awkward people, so people who are uncomfortable with the bar scene or who don't have a large group of friends might be more likely to date online.
College students are settling into a new environment and often struggle to meet people, and this change in scenery and lifestyle can make online dating appealing.
Over the past few years, several sites have sprung up that specifically target college students, including Date My School and Ivy Date.
"The Harvard Crimson" reports that one in five Harvard students uses Date My School, and 50 percent of dates at Columbia University and New York University begin online via Date My School.