Well, that would have been helpful when I announced http://www.browser-details.com http://www.browser-details.com on HN - it allows you to reserve a subdomain a

Well, that would have been helpful when I announced http://www.browser-details.com http://www.browser-details.com on HN - it allows you to reserve a subdomain and it never even occurred to me that I'd have to restrict them (apart from the obvious regex). So a thoughtful HNer taught me a lesson and reserved "www". Took me a second to figure out why the site didn't behave as expected...