SEO Tip #40: How many pages can Google index from a single site?
Matt Cutts: Wow, good question. Not that I am aware of. We will index millions of pages if we think a site is sufficiently good and has a sufficient amount of content.
You are very unlikely to bump up against a limit in our index. It’s purely how useful we think your pages are, which is determined in large part by how much PageRank you have, how many people link to
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