Six naming myths to ignore 15 years ago
I think the length depends on the type of website. For regular companies, community sites, and Internet memes having a longer name is OK. But whenever I try to think up a domain name for an Internet startup I try to keep it down to 2-3 syllables. If you look at the most successful consumer facing start ups, they may not all have 6 characters or less, but probably 95% do have only 2 syllables, or at least only 2 stressed syllables. Character length doesn't matter as much on the Internet because most people are clicking on links or copying+pasting, but having only a few syllables makes the name easier to say in conversation or when thinking to yourself.