oriGin
Their own brand of Gin, of course.
... or perhaps the dictionary on domaintools just getting it a bit odd
Facebook registered a curious bunch of domain names yesterday with the moniker fBoriGin. It's unclear what the domain names, spotted by blog ubergizmo, will be used for. When asked by The Register about the - among others - .com, .org, .net and .co.uk registration of fBoriGin, the world's biggest social network declined to …
The "strange" capitalization may be because they are wanting trademark protection for the name .... you can't trademark a word but you can trademark a logo and (as has been the case in companies I've worked for) by always capitalizing the company name in a way that resembles the logo is thought to help to gain protection for the name via inference from the trademarked logo ... i.e. you are implicitly saying "this isn't an ordinary name ... its a ASCII representation of a trademarked logo".
"Does the word "origin" hint that Facebook could be developing a site intended for users who want to build up family trees or track down long-lost relatives?"
I read an article recently that an interview of someone at FB saying that's exactly what they want to do. If I could remember where I read that, I'd post a link but unfortunately I can't.
I don't think The Register has published a single article on DNS that wasn't embarrassingly ill-informed. Add this one to the list. Is domaintools.com the only way El Reg knows how to look up a domain? Their capitalization is dictionary-based and has nothing to do with the actual registration.
Sounds very much like a CDN origin host to me. Proof of the pudding? Well, if they're using 'fborigin' to host the origin content, you'd expect them to use something like 'fbcdn' for the CDN-fronted access, i.e. the hostname end-users actually fetch stuff from - and sure enough, their Akamai distributions are on hostnames like b.static.ak.fbcdn.net.
Next up, the mysteries of dOwnLoad.microsoft.com, where Windows Service Packs and other goodies come from ...