It seems to me that this is cross-site tracking of the sort forbidden by WebKit (Safari)'s and Firefox's tracking prevention policies:<p><a href="https://webkit.org/tracking-prevention-policy/" rel="nofollow">https://webkit.org/tracking-prevention-policy/</a><p><a href="https://wiki.mozilla.org/Security/Anti_tracking_policy" rel="nofollow">https://wiki.mozilla.org/Security/Anti_tracking_policy</a><p>If Repixel can identify someone as a golfer with joint pain because they visited a golfing website and an unrelated joint pain website, that sounds like tracking an identifiable user across multiple first parties.<p>Should Safari and Firefox ban Repixel?
I received the following email apparently sent by Repixel's CEO John Evans on the 4th of December. I've already reported it to HN's moderators:<p><quote><p>Hi Edward,<p>I noticed you’re a big contributor on Hacker News and I was hoping to get an article seen by the community. Would you be open to taking a look at a piece of my content, and if you find it interesting, consider posting it? I would do it myself but I think your karma points would give it an extra push. Happy to return the favor if there’s anything I can do for you in return!<p>Best,
John<p></quote><p>I'd have concerns about this firm's services, practices, and ethics.