The server does not support 'head' request. When robots
send it, it will be simply ignored. The question:
how common is it for the robots to make a quiry for
'head' only and not for the page content?
e.g. - How big will be a user's loss on such a server?
Are Infoseek, WebCrawler, other common robots making
query for <head> only or for page content as well?