Adware:Adware (or spyware) is a small program that is designed to show advertisements (in various form and degrees of intrusiveness) on your computer. It often reports personal information back to its owners. As a result your sense of privacy can be violated.
WNAD is adware that may be distributed through a popular Yo Mama Osama shooting game. This online game promises a free cell phone booster to players successful in "taking out" Osama bin Laden. After this game is installed, advertisements may be displayed as you browse the web. While ininstalling Yo Mama Osama may remove the actual game, the WNAD file may be left on your system.