Hard to say, I seem to recall it was because some spider authors used session cookies to bypass the EULA (the page probe auto-clicks "I agree" to capture the se

Hard to say, I seem to recall it was because some spider authors used session cookies to bypass the EULA (the page probe auto-clicks "I agree" to capture the session cookie), and faked user agent strings to spoof gogglebot to gain access to site content. One thing is for certain, is its jurisdictional... and way too messy to be responsible for maintaining/hosting (the ambiguous copyright protection outside a research context looked way too risky.) =3