To make a long story short: it's an acronym for "Speed bonnie boat, like a bird on the wing" - a song from my childhood, familiar to those of Scottish origin among us. I use it because when I joined Playmoboard, eons ago, there was something wrong with their registration process that didn't allow any of the more normal handles I usually use. In desperation I picked that to see if ANYTHING would work, and it did, so I stuck with it. You can call me Heather for short.