I have been using different VOIP programs over the last few years, principally, Dialpad, Net2phone, and Skype.
Net2phone has its own software for download, called Communicator, which always includes some form of spyware. I have had to delete it from two computers after I installed it. Both Search&Destroy and Microsoft Antispyware programs found the adware plugin. Of course, when I removed it, the software wouldn’t then work. After that, I have decided not to use Net2phone again until they remove the spyware addins.
Very annoying… More to the point, is this a sign of desperation on Net2phone’s part? Skype must be really hurting them now…