So I'm now in the process of setting up a web design/SEO service targeting local clients. Do I need to worry about hosting them using a single host? I have an unlimited plan on hostgator and I was wondering if it's bad if I had like, say, 20 sites hosted on that plan. I asked because a lot of people are talking about hosting on different class C IPs when putting up a blog network. Of course, I'm not going to network them together. So will it matter? Although, I'm planning on putting up a footer link on all sites linking back to my company's site.