This is probably the only domains i own that i wont ever get rid of (unless i get rich off of it or something) i created this word when i was around 15 and couldn't think of a screen name for yahoo, so i just said damnidunno and it actually works out great as its own name and alot of people love it and especially young people. I own both .com and .net of damnidunno. Google hosts it's email service (gmail, your )and other things that might make it valuable. The forum itself isn't that big, but i did create the skin on it and i find it beautiful. It's hard to get people to use a forum like that which is mostly a humor/chillin forum. But the site gets most the hits off the videos and other funny things I plan to post. I plan on someday making this into a really popular site, its not that big yet but it will be. as of now it's pagerank is at 2. What do you think a unique developed domain such as this would be worth?
Kind of a broad question with alot of iffs. It will all depend on the traffic and revenue at the time. The name itself isnt' worth much (Google name was worth nothing until it was developed into what it is today; same goes for GoDaddy and many other companies).