Strange people on hamster

Is it me or are there some strange people on hamster, I have had 3 instances where people have invited me as a friend, and asked to chat, and as soon as I have chatted, they have closed down there own profiles, and i had one lady, who invited me as a friend, and I accepted, but when I went To send a msg to her, she had blocked me, is it me or has anybody else had these experiences