If you’re a site owner, a system to get pages out of an index in a guaranteed period of time would be very convenient. However, this is probably better handled through webmaster tools that the search engines offer, as they allow a site owner to proactively trigger a removal, rather than waiting for visit from a crawler, which could take days.
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Diversifying your SEO is vital considering the possibility that your main site could be banned in major search engines like Google. An SEO Monopoly can help you form multiple sites in your niche that attract your potential customers.