Person-Level Website Visitor Identity
rb2b.com
rb2b.com
"Now we're going to ruin other channels such as social network inboxes." (might have made that up)
They give some mild technical background: "We use a combination of 1st and 3rd party cookies, device IDs, and IP addresses to track and identify people across our network. [...]
You can opt-out of our network here: https://app.retention.com/optout"
Gotta wonder how they make the connection to the LinkedIn profile in the first place though...