Yes, I understand is not so easy to meet new people in the real world. But look, check your facebook friends, where have you met them? How many online? I am c

Yes, I understand is not so easy to meet new people in the real world. But look, check your facebook friends, where have you met them? How many online? I am curious: how do you meet people online ? Can you describe how it works ? What social service, app or website, will you recommend ?