I know about the long name thing but mostly people just mangle mine instead of shortening it. :-)
Mine's already shortened, so they misspell it. I'm a Bette... But when my formal name is used in conjunction with a husband who uses a first initial and middle name, it really takes up a lot of space on the envelope. That's when it gets abbreviated -- and NOT the way I do it.
My namesake granddaughter (not yet 2) just learned to say her name. She calls herself "Biz-beth!"