I also want to encourage supporting this for reasons obvious and not so obvious. Not all plus people have eating disorders, just as not all rail-thin people do. But even so, there are people who end up pressured into trying to conform to a mass-produced body stereotype in either direction. By helping this organization, you really do help yourself whether you have a disorder or not, by helping progressively undo the social condition that has made anorexia, bulimia, and compulsion so rampant.
Besides, it’s a much more fun way to holiday shop than dealing with mall crowds!