many customers complain about wrong AppID detection:
all URL.Hosts which contain the string "facebook.com" are detected as "Facebook", here some examples:
www.sex-facebook.net - don't click it :-)
www.hack-facebook-password.org "Potential Hacking/Computer Crime, Malicious Sites" "High Risk"
www.facebook.vc - "Dating/Personals"
the same for XING (www.philboxing.com, www.boxing.com), Twitter (www.estwitter.com), Gmail (www.strongmail.com), etc.
for reliable detection of the application ID the database should be based on Host.BelongsToDomain regex.