Related to the post above:
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Another reason that Google still refuses where what data is safed
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That you know Gmail users Mail's getting scanned and after some time you loose the "Copyright" of your Mails - that's US law - and still nowhere is written if and when data is deleted if you delete your Mails.
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Well - and yes - there're still sites out there who don't want to be indexed by any Search Engine, doing it server side is much more easy anyways
And if you're concerned about Chrome - install it, then a Sniffer and browser a little bit while capturing in Background what is sent to which location