I found a document that helped me understand this. http://pro-webs.net/blog/2009/06/26/shared...-bad-neighbors/ The section titled "Neighbors with Bad Content" finally got the light bulb to turned on. This is about "Shared IP Addresses". Many websites, related or unrelated to each other, share the same ip address, mainly because ip addresses are in short supply. This is setup by the ISP. And there must be some kind of mechanism (in DNS I suppose) that get's me to the correct website of say, unhackme.com. Now some of the websites that share that same ip address may be "bad neighbors". Suppose 100 websites share the same ip address, and of those 100, just one of those sites is "bad" - hosting malware or whatever. The "bad" site gets blacklisted so to speak, but since it's blacklisted by that shared ip address, everyone else who shares that address gets blacklisted as well. . Anti-Malware's IP Protection blocks that shared ip address and thereby blocks access to all 100 websites, even though just one is bad. Is that fairly accurate? I suppose if there were a better way to block a bad site, Anti-Malware would use it. So it's just something we have to deal with. So in all likelihood, unhackme.com is perfectly safe.