Wikipedia:Articles for deletion/MyMaths
Per the Google News, Google Books, and Google Scholar hits spanning half a decade this site appears to satisfy . See http://www.cerme7.univ.rzeszow.pl/WG/15a/CERME7-WG15A-Paper15_Bretscher.pdf here, for example, it was the subject of an academic paper devoted specifically to it. (as noted by Mrmatiko moments ago in the article, I see
— User:Struthious_Bandersnatch, 17:52, 24 May 2012 (UTC)
Stance: keep
Cited policy: WP:NWEB (Wikipedia:Notability)