I love security posts like this..
A: Macs are just as prone to malware as a PC. The reason you dont see as many viruses for macs is that hackers target the largest demographic. (Pc's if you cant figure it out)
B: The comment about viruses not jumping up and saying "Hi, Im right here". Duh. There wouldnt be a need for real time scanning otherwise....
C: IE is better about security then it has been. But I will still take FF over it. Use Adblock and Noscript you will be VERY safe.
D: For the love of all thats Holy, get a damn AV program and USE IT! You should have a minimum of 2 security programs. One AV and one designed to target malware/spyware. Scan at least once a week with both.
E: **** sites=BAD!!!
F: If you use Windows, download the updates!! I dont know how many comps I have seen infected and never installed a single damn MS update.
Live by this, and you will find a hack free life....