As the owner of Mythology.com I feel the need to point out that if you were going for the longer version of Baal that'd be Baalzebul, roughly "Lord of Lords". The Jews thought it'd be funny to make fun of the name of the lead god of their enemies by calling him Beelzebub, "Lord of Flies". (Proving that stupid puns to try to insult others is a long, embarassing tradition.)
(With Baal being basically a generic word for god, there were lots of other Baals too: Baal-Hermon, Baal-Shemain, Baal-Zur, etc.)
For the word you are looking for, you are spelling it in the original Jewish form. Most people these days spell it Beelzebub. Your way = 4,320 in Google, the other way = 254,000 in Google.
Either way it's not rolling in commercial possibilities. It's akin to naming your company Satan, Inc. You might get someone with a strange sense of humor to pay $100 or so to use it as a vanity name.
Expects.net I can't really think of any uses for, other than maybe a not-so-hot name for a pregnancy site or a wish list site.
Freelancepublishing.com has possibilities though as a place for people to get help making their own vanity or POD books, or consulting services for publishers in general. It's a little long, and probably one of those types of names that'd need to be developed before most people could understand its value, so resale undeveloped is probably iffy.
Good luck,
