Aha! That one I can answer, because I worked it out :)

Here's the code (well, it's for the tags, but you can extrapolate):

.tag ul li {
	display: inline;
}


.tag ul li:before {
	content: ", ";
}

.tag ul li:first-child:before {
	content: "";
}

The only problem, but it's huge, is that the CSS cleaner will throw a fit if you use unicode characters such as "\00b7", which is the middle dot and which I wanted for the entry function links. I've settled on ~ for now, but I'm not really satisfied by it.