If you happen to be using Yo for some insane reason, we've just been informed that you won't be getting any "Yos" on December 24th or 25th. Nope, instead, to celebrate the Christmas holiday, you'll get similarly-vague "Ho Ho Ho" alerts instead. At press time we were unable to clarify if Santa Claus himself will be leaving monosyllabic push notifications under the tree this year.