Most of the desirable one-word, two-word, and three-word dot com
domains are taken. However, if add plurals and hyphenated terms,
there is still some gold left in the domain name game. If you
find that you need or want to use a phrase or a compound word
with two or more words strung together, you can use hyphens. All
of the search engine robots read a hyphen as a blank space so
you don't gain or lose anything when you use hyphenated words.

The most important reason for using hyphens is readability. Your
keywords are ranked by robots. Your website is read by human
beings. If your domain name is theanythinggoesguide.com, it
would be much easier to read it as The-anything-goes-guide.com.

A domain name as well as an online business is a long term
proposition. You might have to put a bit more effort into your
upfront marketing efforts, but don't be afraid to use hyphens in
your domain name. If it's easy to read, memorable and enhances
your online image, hyphens can add to the lasting appeal of your
domain name.

Remember that the purpose of the domain name is to make sure
that customers remember your web address when they need to get
information or buy a product. Anything that is easy to read
easily wins out over a long jumbled mess of letters.