Being flagged does not mean getting acted on - I checked the reference above re sparklines. I had noticed the new feature and figured it out without having to read the explanation.
Sparklines does not explain the spikes in activity of WP as a referrer.
And.... one thing that would be interesting to know is how can an email to a subscriber be reflected as a referral? Ok, I post . I have 3 subscribers, so at the most, I should have 3 additional referrals. When I get an email from a WP blog, I read it and delete. I don't click through back to the blog because that is NOT LOGICAL. I've read the post already! So, I understand 3 additional "clicks". I do not understand a couple hundred additional clicks.
BTW, I am an accountant. I have dealt with systems for a long time. I kinda relate to numbers so please explain it to me, but cut the bs. I would appreciate seeing a WP employee respond to this issue. I will go check the other threads on this issue.