Don't want to spoil all the fun, but here's what duplicate content checker at
http://www.webconfs.com/similar-page-checker.php says:
Code:
http://www.rbblog.com/2007/05/14/nubile-katusha-in-white-stockings/?wm=920
is 94% percentage similar to
http://www.rbblog.com/2007/05/14/nubile-katusha-in-white-stockings/?wm=252