|In my opinion, Relevant knowledge is a spyware since it collects information about your internet activity and it is evading user and automatically installing through some other software installation.|
Software that self-installs on a computer, enabling information to be gathered covertly about a person's Internet use, passwords, etc.
The thing is, I have it on a several computers and on neither I have installed it willingly. Zone Alarm blocks it just fine though.
As I understand it is installed on your machine but you need to join RK community to enable it. Who knows if it sends info about your activity even if you are not registered. And who knows how many similar "legal" spies are in our computers...