There are real, true and safe dating sites for adults. These include, match.com, thedatingjudge.com and datehookup.com. However, you should be careful while choosing people to date online. Put detailed profile to find the right person.
It's not the site, it's the people that go on it. So to answer your question the site is perfectly fine but I can promise 100% honesty from everyone using that certain site. That goes for everything on the Internet
Nothing on the Internet as far as dating is 100% risk free. You just have to be smart about who you talk to and trust. I actually met my boyfriend of three years on facebook after becoming a fan of his band. I just made sure he sent me a picture of him with my name written on a piece of paper plus we facetimed each other. Just go with your instinct. If someone gives you the creeps, they probably are a creep. Just be smart and use your brain. :)