Is there an ignore list or similar function which will hide posts from certain users? And if so, can it also ignore posts by moderators?

No, you're stuck listening to us all I'm afraid. There's not a way to ignore a mod.

Is there a way to ignore normal users, then?

Yes, click on the My Account link at the top and then click on the Edit Ignore List.

What this does is it keeps you from reading their posts in a thread. They'll still be there for other people but you won't see them.

Just out of interest, why would you want to ignore a staff member's posts?

Thank you jurupamae.

You're welcome :)