Marshall - 7:02 pm on May 7, 2008 (gmt 0) Marshall
IMHO, don't let the domain expire. Keep ownership. I made the mistake of not doing that once and later decided to re-launch the web site and found that someone bought the name and wanted an outrageous sum for it. My loss. You could also consider putting up just one page with "This domain name for sale. Contact ...." if you are sure you are not going to use the name again.