Deletion of Slender Man (2nd nomination)

Comment: Not enough coverage in reliable sources (sorry, KnowYourMeme isn't one of these).  TV Tropes wiki page is |user-generated content, and the others do not appear to be |reliable sources.  Further more, http://books.google.com/books?id=Ovyn0Uvt6g8C&lpg=PP2&ots=GecVcpSUYZ&dq=marblehornets&lr&pg=PA87#v=snippet&q=Slender%20Man&f=false this book merely mentions Slender Man, and focuses more on the YouTube content more than on the fictional character
Stance: delete
Cited policy: Wikipedia:Reliable sources (WP:USERGENERATED||WP:RS)