Just getting my feet wet and I'm trying to start off with some questions. I noticed that some people use one domain with subdomains while other register tons of different domains. What's your experience with this, if I'm going to target the same set of keywords should I just use one domain, one domain with subdomains or multiple domains? Why are people so set on using multiple ips? All shared hosting accounts usually are hosted off a few ips, do you think Google would track down all of your sites if they're on one IP? is it bad practice to register a bunch of similar domains, write different content(or spin it) and interlink them? They would be hosted on different services and with whois guard I can't imagine anyone would know they were owned by the same person.