Seach engines like Google rank your listing higher if a keyword from a search is in your domain name. You can get these names with .museum, when they are not available in .com.
Listen to what the Internet "gurus" have to say about what names to buy:
"As we've frequently reported in our SE Book & Newsletter, placing keywords right in your domain name can give your site a major boost on search engines. We've also reported that some engines are no longer accepting sub-directory pages. This is one of the reasons the smart marketing pros have been buying keyword-phrase domain names. They use them as doorway pages to boost traffic to their sites." says Stephen Mahaney, author of The Unfair Advantage Book on Winning the Search Engine Wars.
Michael Campbell points out, in Nothing But 'Net, "The reason we want keywords in the domain name is that search engines often get 'tuned' to find, and give better positioning to, domains with keywords in them."
Declan Dunn, author of Winning the Affiliate Game, sent out a memo to his affiliates advising "To get on top of the search engines, one of the critical keys is a good domain name LOADED with keywords." Declan goes on to say "This news is spreading among WebMasters, SearchEngine Meisters, Internet marketers, and big corporations. Don't wait."