Reis also said that claims by web sites offering a "science-based" approach that uses sophisticated algorithms to match people have not been supported by independent research.
But that doesn't seem to have affected algorithm-based sites' popularity.
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"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," he said.
But there are downsides to looking for love on the web, according to Reis.
The scientists, whose research is slated for publication in , reviewed over 400 psychology studies and public interest surveys.
In one study, they found that in a single month in 2011, nearly 25 million unique users around the world were online dating.
All told, SPN has posted links to 2,342 studies and generated a total of 1,245,838 visits to these studies (an average of 227 visits per study for links posted in the past month).