"Kindle Paperweight" was even used in the title of a Twit.tv episode:
http://www.youtube.com/watch?v=c6lqRb8oVTw
And "Papershite" can be found in the Amazon Kindle Help forum:
http://www.amazon.com/gp/help/custom...x2TLJPCSO1T38I
So these "Satiric Misspellings" are not unique to MobileRead.