hyphens have a value undeveloped if the words are high paying key words
example
mesothelioma-lawyer in .com/.net/.us is a great hyphen
it has a combination of keywords that sponsors pay 40 to 99 bucks for
anyone could build a fast revenue stream based on such a hyphen domain
you put up a meso page with links to a few pages or a forum, you link them on your busier sites and overnight you have a pr5 or so mesothelioma site that will bring in high PPC revenue stream
now most in this forum aren't developers or PPC gurus, they are domain investors that look at domain values through a very limited set of parameters
that's all fine and dandy, but, a developer is the person who might want to look at hyphen keywords
that all being said, these domains don't offer a developer any high paying keywords, the only high paying keyword in the whole bunch is domain, shack kills it and the .net makes it less valuable
you need to search around for high paying keywords for PPC, then you could start registering tons of good hyphens in the .com for the top paying keywords
many are available
you do minor development, get a cheap link to a few pr5 sites and before you know it you have traffic to a web site where you are getting a few bucks to maybe 50 bucks per click
now if you said here's a pr5 site that made X dollars last month with PPC then some here might bite on the site
revenue is one parameter most here look at
short domains is another
keywords without tricks is another
now if you said the hyphen was mesothelioma-KEYWORD.com some here would be jumping