short domains are great to have first for the resale value, which is considerable. Once the bubble popped they hold their value very well and I suspect may actually be undervalued right now, hence my constant quest to buy more.
strictly as site locations, they're more impressive to your affiliate webmasters than your surfers probably, although I do believe surfers are more likely to sign up for a domain that makes sense and targets their niche exactly. As I said, they're more impressive to your webmasters because if you have adult.com in your site portfolio, for example, prospective affiliate webmasters know you mean business and they can expect a certain level of competency from you. Also, if you can afford premium names it means you can probably afford to pay your webmasters
if you have one or two word PREMIUM domains hit me up, I have a sizable budget to work with
