How to appraise a domain name?

[masterco]

Well.. actually I don't mean the proces of buying a domain name, but I mean how to look how worthful a domain name can be and how to see if there is any value in the domain name. I know the Overture keyword selector tool, but will that result make sense on the value of the domain, or are there any other factors?

Thanks again!

hmm nobody can tell me? Maybe someone know an old topic on this board about my issue?