The main disadvantage is that it's too easy to forget the hyphens (dashes) when typing the domain name and to make errors, and most users will end up in your competitor's sites. It is also a pain, and users don't like to waste their time. Amateurs buy and register domain names with multiple hyphens, and they aggravate the easy errors user will make when trying to find them.

The professionals stick to domain names without hyphens, and get all the business, their normal traffic, plus the lost traffic generated by all the hyphenated domain names.

The Internet is very competitive and you either have the right domain names or you don't.

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