There are many reasons people make multiple accounts. Could be more than 1 person playing on that system. They use different accounts for different styles of play. For instance they could have a low KDR because of trying to knife only and don't want it to effect their normal account. They could do it just to try and hide the fact they are hackers so they can't be traced. Like I said many reasons, probably more than I have stated.
As for finding replies you can either find it by going to your profile and looking at your activity, but that hasn't worked for me for a while. You can go back to the thread you posted on and go back through it. Could even try clicking the Your Stuff tab on top and try navigating it through there. You could also turn on your E-mail notification but be prepared to get like 200 E-mails a day. Good luck with that.
