I believe this is the Yes

[Jazzman]

I believe this is the Yes Men. See Bopal Dow Chemicals.

http://blogs.reuters.com/felix-salmon/2011/09/27/is-alessio-rastani-a-yes-man/

http://www.forbes.com/sites/emilylambert/2011/09/27/trader-or-prankster-we-called-alessio-rastani-and-asked/