If you own thousands of sites (I've read some people own over 100,000 sites), how do you host them safely without getting banned from search engines? Even if you spread them across 100 servers, you'd still only have script generated websites on your IPs. Couldn't Google potentially ban all your IPs and you'd wake up one day having lost most of your income? Are there any solutions, affordable or not, that spread your mass generated sites among different servers or IP classes? I've read it's rare for people get all sites on an IP banned in one day, but who is to say it won't start happening soon?