“Google” is a misspelling of the number called “googol,” which is a 1 followed by one hundred zeros. The search engine was named for this huge number to indicate it’s intention to search through immense amounts of information, which it certainly does.
Your Bluetooth devices are named for a 10th Century viking king who needed a dentist. Harald Gormsson was a Scandinavian ruler who united Denmark and Norway, all while sporting a prominent dead, dark blue-grey tooth that earned him the nickname “Bluetooth.” Early Bluetooth engineers, seeking to “unite the PC and cellular industries with a short-range wireless link” used the name in honor of this uniter king, but it was only meant to be temporary. When the other proposed names for the technology were found to be trademarked or weren’t trademark searched at all, only “Bluetooth” was left for the upcoming launch. What’s more, the Bluetooth logo is the old king’s initials as written in ancient Danish runes.
The term “yahoo” was first coined by Johnathan Swift in his 1726 book “Gulliver’s Travels.” The yahoos were a primitive humanoid race, “brute[s] in human form,” who also happened to be ruled by a race of super-intelligent horses. The modern search engine’s name is an acronym for “Yet Another Hierarchical Officious Oracle,” but Yahoo creators also chose the name because they liked it’s uncouth connotation from Swift’s book.
Apple co-founder Steve Jobs came up with the name after returning from an Oregon apple orchard. He thought the name sounded “fun, spirited and not intimidating” and was also on one of his “fruitarian” diets at the time. An added advantage: the “A” word would be closer to the front of the phone book.
Twitter founders originally considered the names “Status,” “FriendStalker,” “Vibrate,” and “Dodgeball,” but a dictionary search encountered the word “twitter” and a definition of “a short burst of inconsequential information; chirps from birds,” which sounded spot-on. It was initially called “twttr” in the mold of flickr, but reverted back to Twitter later.
Originally called “The facebook,” Facebook’s name came from the the list of student and staff directory and profiles which freshmen at founder Mark Zuckerberg’s then-school Harvard were given.
Craigslist is named for founder Craig Newmark, who started the site in 1995 as a hobby after emailing some dozen friends about interesting San Fransisco happenings. As more people asked to be added to the listserve and asked for info on other things, including tech jobs, he created the site.