One part of it that I found interesting tied into a recent thread about mineral sites...
Here's a quote from the article...
You may have heard the argument that deer are social animals and naturally congregate, lick and groom each other, lick branches, etc. so they will naturally come in contact with each other and thus, it’s OK to continue using bait and lures. While it is true that deer are gregarious creatures, encouraging unnatural congregation and exchanges simply increases the odds of disease transmission
Bait piles especially encourage unnatural contact and help cast CWD prions in a very small area. We can’t do anything about natural deer and elk behavior, but we can darn sure do something about ours.