I have an email for not official mails, for forums, torrent and etc which I check very rarely, for example when I am registering on new forum or on unclear page (when I do not want to get spam). So this was that time. I checked my email and I see a lot of messages/mails from this forum. When I loooked closer I understood what is going on... Ok, then I went to this forum and logged in. I saw fraud on this account. Then I realised that password was not changed. I cannot undestand WHY??? even now. Maybe for this intention that it would not be easy to prove that I am not guilty. Now I changed it.
About posting quality. I am not fluent speaker in english, so you can make the false allegations..
I believe admins have log where they can see login location and so on..but, yes, internet can let you login from any location as you wish...