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I don't think so. Perhaps I'm wrong but I thought that:

a) Google CAN read single-page JS based websites

b) Google doesn't like it if you treat the googlebot differently to a real browser. That's blackhat and you'll be penalised if they find out.

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We follow all of Google's recommendations for making AJAX website crawlable. https://developers.google.com/webmasters/ajax-crawling/

Google does process some javascript, but it can't crawl full blown AJAX websites.

a) Google can read JS, but they can't necessarily navigate through all the different pages of a single page app. Their recommendation for that is currently to use #! and then when GoogleBot visits a page and sees the #!, GoogleBot will replace that with ?escaped_fragment=... It's then up to you to provide the content of the page to GoogleBot, and that is what this service appears to do.

b)As long as you are serving the same content to Google, it is not considered blackhat seo, and you won't be penalized. Cloaking would be serving different content to Google than you serve to the user in an effort to boost your rankings over what the content the user sees would rank.

I stand corrected. Thanks for making that clearer.

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