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Automatically refreshing pages can be disorienting to some users but if you do use
them, note the following:
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Don't use HTTP-EQUIV="refresh" in a <meta>
tag to reload a page until various browsers and assistive technologies allow you
to turn off the feature
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If you use a continually updated page, tell users to reload the page often
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Provide text at the top of the page stating that the page contains changing information
and will automatically reload itself after a certain amount of time. Also, provide
a link to the next screen for those browsers that don’t support the feature
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If you create auto-refreshing pages using Java applets or other techniques, you
should provide a way to control the rate of refresh or to disable page refreshing
altogether
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More information
An overview of the accessibility guidelines
Ensure user control of time-sensitive content changes
Don't make the screen flicker
Don't make content blink
Avoid movement
Don't create pages that automatically refresh
Don't use HTML to automatically redirect pages
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