Installed this is the two sites i run. And it worked like a charm - for a couple of Days and then i saw i sharp rise in code 403/404. It increased from a handful to hundreds per month. I searched the corners of the web for a solution and have tried a lot of things, but today i uninstalled it. Every time i made a change in something the site worked for Everything between an hour and a couple of Days until it went down.
It seems that the plugin works better in chrome then IE.
And if you want a plugin that works as intended directly when you install it - this is not for you. You have to search and even use some trial and error to máke it work. Right after install my site became 50% slower, but some tinkering later it finally went faster, but then the errors came instead.