verisign made over 5 million a day with their spam pages when a domain isnt regged.
So dont say all are worthless :>

I usually divide by 100 to get a rough idea. But domain value is what you make of it. What's the difference between sunmicrosoft and sunmicrosystems? The longer one has recognition. I'll sell you the short one, a dotcom. How much you gimme?

Absolutely. This is something newbies to the industry must first learn - it would save them a lot of money.