The most common STDs are: Chlamydia, genital herpes, genital warts caused by human papillomavirus (HPV), and HIV/AIDS.
To reduce risk, use a condom every time you have sex.
Falzone tells a story of a North Carolina woman who fell "totally in love" with a Massachusetts man she met online. Eventually, he encouraged her to sell her house, pack everything into a truck, and prepare herself and her two young children for a new life.
Then comes the email saying, "I can't go through with this.
Hitchhikers, rocket scientists, even nuns probably do it, at least once. Then there are other dangers -- boredom, disillusionment, getting dumped, or simply getting taken.
There's serious stuff out there, like HIV and STDs, date rape, online stalkers.
"You're looking for a connection, someone you're physically attracted to -- who's physically attracted to you -- plus someone who doesn't make you feel bored from the get-go," Schwartz tells Web MD. "But don't let the love bug mesmerize you," says Paul Falzone, author of the book, Find the Right One and CEO of "The Right One"and "Together," two nationwide dating services.
And yet, 45 percent of the people polled still saw online dating as "dangerous" compared to other ways of meeting people. Twenty-eight percent of users reported being contacted by someone who harassed them or made them feel uncomfortable.
Women were more likely to experience said harassment (which would explain why they are more likely to see online dating as dangerous).