Does the user agent in any regular browser contain 'bot' or 'crawl'?

Posted by Echo on Pro Webmasters See other posts from Pro Webmasters or by Echo
Published on 2010-10-11T19:07:35Z Indexed on 2014/06/12 15:42 UTC
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user-agent

I check the user agent on my site to see if it is coming from a bot or not. If it is, I can do some little optimizations since they don't login. (I don't change the content at all)

After adding checks for 30-40+ bots, I'm getting tired of added them. So I was wondering if checking if it just contains 'bot' or 'crawl'. I know that wont get all bots, but it would get a lot of them. But if that could cause any false positives, then it would totally mess up the ability to add to cart, place an order, and login in.

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