I know a lot of people put in computer fans and such to help circulate air around the keezer.. while that in itself is a great idea, I came across this and ordered it, thought I would share.
The finish has a lifetime guarantee against corrosion, and is about 1/5 of the cost of stainless (plus offered in smaller sizes). They have a variety of lengths and sizes to fit your keezer, and this particular size is rated for 800 lbs.
So basically it just gets the kegs up off the keezer floor, which will of course improve circulation. Add a fan in there as well, and I would imagine you could get really consistent temps. Plus an added bonus, it keeps the keezer floor clean. Also, I think I may angle my keezer a bit, so all moisture will flow to one side, then I could easily wipe it up once a month or whatever with a towel.
shipping is only a couple of bux, but there is a $10 charge on there that says 'minimum charge' or something.. even still, total to my door was $35.. pretty cheap IMO. the bottom of my keezer is 16 X 26, so this fits in with an inch on every side.