Auto Trader has declared war against it's users by blocking all access to its website unless a certain browser plugin is removed.<p>AT price tracker is a popular browser plugin which allowed users to keep track of price changes.<p>Those with the plugin installed were presented with this message instead of the website<p>You can no longer use the AT Price Checker plug-in on Auto Trader<p>Sorry, we know that you find it handy, however we no longer allow this tool on the site.<p>This is because AT Price Checker puts other company's adverts and promotional information onto our pages, which we have no way of checking or endorsing.<p>To continue using Auto Trader, you'll need to remove or disable the plug-in.<p>To help you switch it off, you can find links for the most common browsers below.<p>See you back on Auto Trader soon.<p>The author has (voluntarily I believe ) removed the plugin from the chrome store while it gets sorted out.