Washington - Americans are growing more comfortable with online dating, and many are finding a spouse or partner in cyberspace, a survey showed on Monday.The Pew Research Centre found 11% of internet users - or some 9% of all American adults - said they have personally used an online dating site.That is a sharp increase from 2008, when just 3% of American adults had used online dating sites, Pew said.The survey found 66% of those who use online sites or apps have gone on a date with someone they met through one of these services.And 23% of online daters have married or begun a long-term relationship with someone they met through a dating site or app, Pew found.Pew researchers said Americans' attitudes about online dating have dramatically changed since it first began studying the subject in 2005.Dating options"When we conducted our first study of dating and relationships in the digital era just under a decade ago, the public had little exposure to online dating, and most viewed people who went online to meet potential romantic partners with a healthy dose of scepticism," said Aaron Smith, main author of the report."And although some of that scepticism remains, online dating has become much more culturally accepted in recent years. Americans are now much more likely to count an online dater among their friends and family, and a majority view online dating as a good way to meet potential partners - one that in some ways is superior to traditional ways of meeting people."The survey found 59% of internet users agreed with the statement that "online dating is a good way to meet people", compared with 44% in 2005.And 53% of the group agreed that "online dating allows people to find a better match for themselves because they can get to know a lot more people", up from 47% in 2005.Pew found 21% of internet users claimed that people who use online dating sites are "desperate", down from 29% in 2005.Around a third, or 32% online adults, said online dating keeps people from settling down by giving them more options to meet people. This is the first time Pew asked this question.A number of respondents related negative experiences with online dating: 54% of those who used online services said they met at least one person who was "seriously misrepresented" and 28% said they felt harassed or uncomfortable by someone using online dating services.The survey also found online daters going mobile: 7% of cellphone apps users, or roughly 3% of all American adults, said they have used a dating app on their phone.Happier couplesThe Pew survey generally supports the findings of a study published in June by University of Chicago researchers, which found more than one-third of US marriages between 2005 and 2012 began with online dating.That study published in June in the Proceedings of the National Academy of Sciences also found couples who meet online may be slightly happier than couples who meet through other means.However, some experts took issue with the findings because the survey was commissioned by eHarmony.com, the dating site that attracted one quarter of all online marriages according to the research.The Pew report was based on a phone survey of 2 252 adults between 17 April and 19 May. The margin of error for the full sample is estimated at 2.3 percentage points.