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Online dating has grown rapidly in popularity and social acceptance and is second only to meeting through friends, as a way for singles to connect, but it does have its pitfalls, Reis said.
Comparing dozens and sometimes hundreds of possible dates may encourage a "shopping" mentality in which people focus on a narrow set of criteria like attractiveness or interests, he said.
And corresponding by computer for weeks or months before meeting face-to-face has been shown to create unrealistic expectations, he added.
The analysis, based on a review of more than 400 psychology studies and public interest surveys, was released online Monday ahead of being published this month in the journal Psychological Science in the Public Interest.
"The internet holds great promise for helping adults form healthy and supportive romantic partnerships, and those relationships are one of the best predictors of emotional and physical health," said Harry Reis, one of the five co-authors of the study and professor of psychology at the University of Rochester.
And with so much choice, choosing on the right one for you can be a tough job, as can finding one to suit your budget - but how much should you spend on your quest for love?
Here are 10 of the biggest websites in the UK and how much they cost a month.
Millions of Brits turn to the web in search of a partner every year - but what's the true cost of finding love on the internet?
There are currently over 1,400 relationship-finder sites in Britain - all claiming to do one thing - find your match, and at that, fast.