I think that the word eEtiquette (thanks Tony) is great. It is definitely a real word, and is a perfect example of those words that stick irrelevant capital letters into the middle for whatever purpose. What is the purpose? With this word, eliminating the capital letter produces eetiquette, and the logical pronounciation loses the origin of the word. Putting the capital letter in creates a different logical pronounciation, with the word pronounced as if it were two words or hyphenated; in which case, why not a hyphen? Better still, don't use the word at all - I am sure that nice manners apply similarly in all situations, and there is no need for specialised manners online.