Chicago Tribune (and picked up by the wire service):
http://www.chicagotribune.com/news/nationworld/chi-talk-smile-projectmar30,0,2050435.story
http://www.diablomag.com/Diablo-Magazine/July-2009/Come-on-get-happy/
http://www.starbulletin.com/features/20090630_The_world_smiles_back.html
http://www.honoluluadvertiser.com/apps/pbcs.dll/article?AID=2009907070302
www.oregonlive.com/news/oregonian/margie_boule/index.ssf/2009/06/she_sees_art_in_spontaneous_sm.html#more
http://www.dailyherald.com/story/?id=298157
Yahoo:
http://astrology.yahoo.com/channel/health/can-you-talk-yourself-into-more-happiness-440320/;_ylt=AmoQv3xWE_lBl_TQFPR_0KVhbqU5