Further Information about the OSX/OpinionSpy Spyware
Intego has been monitoring the actions of the different versions it has found of this spyware. It his discovered that, after a certain time, the spyware makes an “upgrade” and installs another application, which is another variant of the same spyware, called PermissionResearch. (It is also possible that further versions of this spyware will upgrade [...]
http://blog.intego.com/2010/06/02/further-information-about-the-osxopinionspy-spyware/