urls with more than three dots in them make me suspicious
like, www.website.com? Sure, that's okay
www.website.co.uk? okay, that's how .uk sites often are
www.subdomain.website.com? looking a little sketchy here, why not just subdomain.website.com?
subsubdomain.subdomain.website.com? okay what are you doing
triplesub.subsubdomain.subdomain.website.com? okay that's just suspicious