What should be included in a standard web UX/usability audit and recommendation?

UXers here probably audit existing websites or pieces of software that are already established. Sometimes, we are involved in designing them from the start, but for times when we are not, we just have to audit and list recommendations for the existing work.

In your UX/usability audits, do you follow standard procedures or do you just write down whatever UX or usability issue you see, then list your recommendations?

I'm thinking of making a standard usability audit. Right now, the quick things I can think of are Fitt's law, web page title, and visual consistency.

Should there be a standard process for usability audits? If so, what do you recommend to include in that standard process?

Let's limit this to websites to be more specific.