The last web site that my company, Infinite Designs, Inc., redesigned in 2009 was for a company that sells brass fittings. Interestingly enough, the owner of the company understands the importance of a strong key word domain name. The top search for this industry is "Brass fittings". So it made sense to acquire the domain.
The name was already owned and to be honest, I don't know if it was a domainer or a private individual as this process took place several years ago. Regardless, the owner of the brass fittings company was able to acquire the domain at a vary reasonable price (about $1,000). Bottom line is that website is located at BrassFittings.com and has significantly increased traffic to the site. I will try to gather the exact statistics and post an update once I have the information.