Potentially Unwanted Programs
"Potentially Unwanted Programs" sometimes act very similarly to viruses or spyware. They are usually installed legitimately as a part of another program (often designated as an "AD-Supported program" – in which the End User License Agreement typically prompts the user to accept that, in addition to the desired program, an additional program (Potentially Unwanted Program) will also be installed).
AVG is able to detect some Potentially Unwanted Programs and remove the detected files.
NOTE: Removal of the Potentially Unwanted Programs can result in damage to the AD-Supported program which was installed with them.
It is also possible to create exception for files detected as Potentially unwanted. Such files included in exceptions will not be detected as threats any more.
Procedure how to add file to PUP exceptions is described here.