PII is an American legal term - in the US there is hardly any privacy on the internet. US companies are free to collect IP addresses for US citizens
In the EU and relating to EU citizens, "personal data" is any data that relates to an identified or identifiable individual. An IP address does constitute "personal data" under EU law, if there is a legal means to find out who the IP address belongs to. See
http://www.whitecase.com/publi... for details.