All The Tropes Wiki Project, Part IV

[Labster]

Actually, it's a feature of the creative commons license.  They redistributed his work under terms not allowed under the original license, therefore their license to distribute that content (and all derivatives thereof) is terminated.  Pages like "Mahou Sensei Negima" (+ trope subpages), "Neon Genesis Evangelion", "Getting Crap Past The Radar" and "MST3K Mantra" are copyright infringement, because TV Tropes no longer has a license from Bob to distribute them.
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