If you are not happy with your current user name, then it might be changed. But It's depends on mods.
That is true. You cannot find that rule in FAQ/Rules of DP. But I guess it's already given/implied. Why do you want to use 2 usernames anyway? --Joe
Users are allowed a single account/username, and multiple accounts will result in all of them being banned. http://forums.digitalpoint.com/faq.php?faq=dp_faq#faq_policies
thanks for the answer I want to find links for my blogs in 2 different niches. But I see It's not possible here.
that's another difference;-) Just example : From one account to suggest links for Kids sites and from another for adult links;-)