Thank you Snipe and Hellmelt for your responses :)
Sorry Hellmelt but I thought it was obvious what I was asking. I`ll try to clarify things for you. I`m not asking about creating a clan myself but rather questioning somebody else making a clan using my id ("Can there be an "mk" clan?" which I`m not involved in). I`ve already seen several ids such as "mk_kert" and "mk_ford", among others, which suggests somebody has indeed formed a new clan. The other topic subject "mk_summ0" is interesting (relatively). I hope you`re not so confused now ;)