I'm working with a client's website and I notice that the link to the css file is written as if a value is being passed to it.
<link href="css/root.css?rev=2" rel="stylesheet" type="text/css" />
The ?rev=2 part looks like most normal html post variables, but this is a CSS file. I've never seen anything like it. I've never heard anything like it. I don't really think it does anything.
Does anyone have any thoughts on why the original developer might have done it?