Browsershots respects the robots.txt standard. If you want, you can explicitly allow Browsershots by adding a section like this to the robots.txt file on your server:
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Add browsers with fewer running instances or with large number of pending requests first in order to optimize overall waiting time for all browsers.
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Thank you for visiting this page. We are currently working on it at the moment but we will try our best to launch it soon. Please come back again later.
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%(count)d screenshots
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We do have a paid service call Priority Processing which will put your requests ahead in the queue.
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Total %(count)s browsers are available on %(platform)s at the moment.
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How did you come up with the idea?
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Are you sure to remove "%(browser)s" from factory "%(factory)s" ?