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The ones coming from Portland Oregon are a form of scraper many coming from: Ian Duggan, IP 204.11.219.89 21 Productions IP 204.11.219.96 Eric Fleischman IP 204.11.219.87 You will also see some from forex-ninjas, these are simply referral spam, they're trying to get you to visit the url and essentially create a visit. If you're using Wordpress install a plugin called IP Filter and place these IP's in to be filtered. This will take care of the ninjas and the others. 204.11.219.* 176.65.158.36 204.11.219.88 204.11.219.95 204.11.219.92 If you block all those IPs the visits will stop, that is what I have found.