Wikipedia:Articles for deletion/Polarity therapy
I won't comment on the other sources, but concerning the Observer - a brief mention in a listing doesn't make something notable. If it did, we'd have articles on every business in the Yellow Pages and every item of Ikea furniture. Sources like that can be useful for  purposes, but they don't help much with 
— User:Bobrayner, 07:46, 11 May 2012 (UTC)
Stance: comment
Cited policy: WP:V||WP:N (Wikipedia:Verifiability)