nomis5 - 5:53 am on Apr 28, 2010 (gmt 0)
My advice is don't do it.
But it also depends where your traffic comes from. If it's mainly from the SERPS then definitely don't do it unless you have solid information that a domain name affects your ranking in the long term.
But if your traffic comes from other sources then maybe you should buy it. Another possibility (like escrow.com I believe) is to lease it.