This is a question that comes up quite a bit:
It’s short for B. Unlimited (think “Be Unlimited”, “B” for Brown, you get the idea) – it’s one of the first domains I registered. Back in the day, short domains were considered to be much better than long domains, thus the short version. It’s also a handle I’ve used since my early days online. And yes, I’ve heard all the “bun” related jokes, really, it’s okay.
