A quick tip for both those who collect Christmas stamps and new collectors who are considering adding stamps to their collection via kiloware, i.e., recent stamps sold by weight still on envelope paper. Those lots of worldwide will likely include many Christmas stamps, but here's the rub: many of those stamps franked colored envelopes, which when the collector goes to soak the stamp off can bleed color into the soaking water. Bright red, blue or green dye in that water can taint stamps. This disaster isn't as common as it once was, as self-adhesive stamps' coatings can be a protective barrier. Also, it is possible that fewer Christmas stamps appear in kiloware than once was common. This year in the United States it is estimated that only about 30% of the population sent holiday cards. As usual, the culprit is email and online communications.