I respectfully disagree with psychodad on the Danby issue. I made a kegerator out of a Danby and it has served me very well. Their factory kegerators may suck, but their fridges are great. Here's what i've done.
As to the fridge in the ad, i'd say those dimmensions indicate that you would be limited to one corny keg. My Danby measures 20.5" wide and about 21" deep and I can only just squeeze two cornies in side-by-side.