It appears that the host that is doing DNS resolution for YS does not have their DNS set properly to resolve "ysperformance.com" so when trying to reach it the browser will fail unless it does the workaround of adding "www" in front. Dave, have your host add a new "A" record to their DNS zone file which includes a pointer to your ip address for "ysperformance.com" so people can find you by typing that as well.