BW

BW: 1. Best wishes. 2. Pretty much pointless pair of letters used on email when it would have been just as easy to write best wishes. (see Bz; IMHO; KR; PCB; Tks)

IMHO

IMHO: 1. In my humble opinion. 2. Seemingly innocent four-letter acronym that usually precedes a splenetic burst of invective in an overlong email. (see Enlighten me; TBH)