buckworks - 6:48 am on Jan 16, 2005 (gmt 0)

I'm not sure of the technicalities, but get your host to set things up so that if someone types your URL either with or without the www. bit, it will resolve to your preferred version. That improves the chances that your organic link popularity will focus on one version.

Also, set up ww.example.com and wwww.example.com so they resolve to your real URLs.