This is a very useful and efficient programme which, once set up, runs in the background catching all 'nasty weevils' other anti-virus programmes cannot find.
It also can be set to prevent you accidentally getting into porn sites, a known source for spyware and keyloggers.
It is also preventing children/grandchildren/visitors from getting onto porn sites.

It is advised to run a scan at least once a week and frequently check on updates.

http://www.javacoolsoftware.com/spywareblaster.html