Rules for internal capitalization (p, 496)

Wired Style recommends this guideline for use of intercaps in names like WordPerfect and HotJava:

Follow the usage preferred by the name's owner. For example:

1. Follow company and product usage. If RealNetworks, Inc., spells one of its products RealPlayer, then that is the spelling you should use.
2. Respect the preferred spelling of online names and handles. If an Internet user wishes to be known as WasatchSkier, then that is how you should spell it.

In cases where the name begins with a lower-case letter, such as eWorld, try to avoid beginning a sentence with that name. If that's not possible, however, then use the correct form even if it means beginning a sentence with a lower-case letter: eWorld finally bites the dust.

[Source: Hale, Constance (ed) Wired Style: Principles of English Usage in the Digital Age. San Francisco: HardWired, 1996.]