So i was on sythe.org a site for buying virtual goods on runescape. I created a topic saying i wanted to buy something. One person private messaged me asking for my Skype and another messaged me in the topic asking for my Skype. I gave both those people my Skype. But THREE people added me. The first two said they had no idea who the third guy was except one of the guys knew him from the site and said he was on sythe.org. How did he get my Skype? Did he hack it? will he hack my computer? I'm worried about how this random guy got my Skype.