Is there a way for me to moderate what comments get on my wall? I'd like any comments posted to have to be approved or denied by me before they get posted. So if I give the OK they go, otherwise they never show.
Yes, Facebook does now provide a setting to allow you to review posts before they appear on your Timeline (a.k.a Wall), go here to see the relevant available privacy settings:
https://www.facebook.com/settings?tab=timeline§ion=review&view