Just an example of what I every day encounter, visiting bots seen and counted as visitors. So for instance I had a visitor with this IP: 22.214.171.124 turned out to be MSNbot.
How is it possible that Piwik doesn’t detect this user-agent?
EDIT: couple minutes later another MSN ip: 126.96.36.199
EDIT 2: yes, I already have ‘msnbot’, ‘bingbot’, ‘googlebot’, etc. blocked under settings.