New site member portaldefender does not match any existing user name (account age and site membership 23 days) has a history of problematic behavior on the mainsite:
Low-quality feedback: http://www.scp-wiki.net/forum/t-4320468/scp-3927#post-3636396
Good idea but it needs more information, if you like I could give you ideas for improvement.
Not quite getting how to use feedback: http://www.scp-wiki.net/forum/t-4321954/scp-3227#post-3641058
I know there are some gramical errors, so I would be happy if you could edit any errors found.
Given their sandboxes, at least three low-quality articles that seem to have been either coldposted, or posted first and then later brought to the sandbox, and never posted again.
Additionally, it was brought to my attention that an account with the name portaladventures does not match any existing user name was created 20 days ago, and joined the site 19 days ago. Thus far, said account has no activity other than upvoting PortalDefender's current coldpost (at -16 so far, and the only upvotes are portaladventures and portaldefender).
I have revoked the membership for the "portaladventures" account and sent a message noting that we don't allow one user to have multiple accounts and that sockpuppeting is grounds for a permanent ban, and to provide proof that they are not the same user if they can.