I've been watching this thing in real time as it browse the site (was watching using an "who's online" type of script). The speed in which it browse pages was way too fast for humans (read: evaluators). At times, loading 2-4 pages p/second. Also, IP Reverse DNS shows "crawl-66-249-72-180.googlebot.com".
Gobbled approx 200 pages in a 20 minutes frame....that's one hell of a dedicated speedy evaluator if you ask me. Nope...this thing was a bot. A very clever bot.
[edited by: Web_speed at 3:01 am (utc) on Oct. 8, 2008]