:Hmm.  That's definitely touchy.  It reminds me I need to go back and check on someone that was "openly" updating his own page and claimed to be the subject.  Cripes, I need to remember his name.  The fact that he refers to his page as "his resume" is troubling, but likely an innocent misunderstanding of what Wikipedia is.  Your link is to a disam page, but I'm assuming your talkinag about Willie Colón.  One place you could read is the COI noticeboard, perhaps post a note there that this user is claiming to be the BLP subject, just to get more eyes on it.  He shouldn't be blocked, by any means, but rather encouraged.  If he really is our friend Mr. Colon, then he is a subject matter expert, (not necessarily just in himself, but in his work, his colleagues, etc).  He might have an extraordinary wealth of sources that he would be willing to make available to improve our articles - photos, offline sources, etc.  I agree with you that he cannot just say "I'm Willie Colon" and continue editing without sources. So there you go.  I rambled, but there are some gems in there -)