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  1. Good approach Jake. Graceful fail over is so important to good UI design and this is a sensible pattern for achieving that.

    As for crawlers following the link, most crawlers drop the values after the ? to avoid false submissions of data. You just need a graceful way to respond to GETs that come with no ?CreateDocument&vote=yes.

    It's worth noting - what I am describing is GOOD practice for the more well behaved crawlers. Once upon a time a poorly written crawler trawled my blog and created about 300 bogus empty comments. Input validation eventually solved that problem for me. So, hindsight, even if we assume crawlers will drop the queryparms, there may need to be some other counter measure such as a bot rule or meta tag.

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