Firefox only (Windows/Mac/Linux): Firefox extension ReloadEvery lets you automate the refresh process by allowing you to pick a time interval right from the context menu to reload any web page.
We've mentioned ReloadEvery before, but that was back in the day—now, it seems like so many things we would have used ReloadEvery for (such as webmail clients or a Facebook/Twitter-type feed) are now Ajax-powered and stay up-to-date themselves, but this extension can still be pretty handy. Whether you're trying to find your iPhone with MobileMe (it doesn't automatically update location until you refresh), waiting for concert tickets to go on sale, or just want to set your favourite blog to refresh every so often to stay on top of things (*wink*), there are still a lot of uses for this in today's high-tech, auto-updating world.
Got something you'd use this extension for (a Woot-off, perhaps)? Let's hear it in the comments.
ReloadEvery [Mozilla Add-Ons]