Thanks for the tip, Morlis, but I think I actually prefer digging up Kalimdor, lol.... For a few reasons:
1) I'm at the point where I have pretty much all the rares for every other type of dig on the continent (just got the troll sword last week so now I have a pretty sweet transmog item for alts), so once I clear out about 4-6 sites outside of Uldum, I end up with four sites in Uldum which generally regenerate continuously for a good number of digs in a row.
2) Unless they changed it since the last time I turned in an artifact in Pandaria, the amount of pieces you get in a crate isn't enough to finish an artifact. I can finish 1-2 artifacts per Uldum dig site (depending upon how many keystones I get).
3) Profit! I've made over 10k (so far) from selling junk items I've pieced together during my search.
I know quite a few people swear by the Pandaria method, but it just seems like more work for not as much gain to me, lol. So I'll just stick to putting holes all over Kalimdor and not bothering to fill them in when I'm done because I am an Ambassador and I can get away with it. Diplomatic Immunity, y'all!