It's actually a very interesting show if you happen to know the people involved

My sister's friend's mom went on wifeswap once... She's the classic "Farmington" uberrich, multi-million dollar house, nose up in the air a mile, drives a Hummer, would be aghast at ordering takeout, superiority complex, yada yada yada, yet pretty darn good parent, as her kids all turned out great (and suprisingly humble, so maybe my impressions of her are off).
They threw her into a trailer-esque home for a week. Her "1-week-husband" took her to a drag show, while his wife slept until well past noon every day back in Farmington. All the kids were wide-eyed in amazement.
The sad thing was though, the Farmington parent whipped those trailer kids into shape in no time, instituted family dinners and get togethers, read to the young ones, yada yada. The kids seemed genuinely upset that she was leaving.
The trailer mom didn't really do much in Farmington besides provide an interesting amusement, and leave the kids $5,000 or so each to buy a CELLPHONE

(The mom's get to make a "will" of sorts, delegating where the money goes, or at least they got to do that a few years ago).