“CamelCase” is a term for a name created when capitalized compound words are run together. Web domains in particular have accelerated their usage (MySpace, CompuServe, EarthLink, etc.), and they have become quite the trend with marketers these days. Even large companies (FedEx, GlaxoSmithKline) are sneaking it into the public consciousness.
Incidentally, the rabbit hole through which I found this word started at Heath’s post about corporate subversion, which led me to a link to Ward Cunningham, which led to a link to the Portland Pattern Repository, which led to a link to CamelCase. God bless you, Wikipedia.
Also known as StudlyCaps.