I have some questions about antispyware apps: 1. I know you're not supposed to run 2 antivirus apps at once, but that you CAN run 2 scanner-only antispyware apps at once. But should you not run 2 real-time-protection antispyware apps at once? 2. Other than the fact that spyware "spies", just what is the difference between a virus and a spyware app? In other words, why can you run one antivirus app at the same time as a real-time-protection antispyware app? 3. Do all antispyware that offer real-time protection constantly run in the background to prevent the installation of malware, whenever an attempt is made to open a file or launch an application? Do they all also offer manual and/or scheduled system scans? 4. Does Comodo AntiVirus + Firewall include antispyware functionality? 5. Does Spyware Terminator include antivirus functionality?