[Question] Regarding About my Steamtrade Profile [Question]

I have a question to ask, Sorry im not good in english please understand me.

Someone wrote in my profile that im "scammer" a week ago, and i just notice it now

here http://www.steamtrades.com/user/jdlivara. I dont Even know him Can I report him

because its kinda ruin my reputation. I also wrote back in her profile i also wrote scammer.

his steamtrade profile is here:

http://www.steamtrades.com/user/mymheaven

its kinda important to me