3 ms·Probably a http request tracking ID that can be used for debugging the request.by Oppertunity123 7y agoProbably a http request tracking ID that can be used for debugging the request.ceejayoz 7y agoIt's a "Facebook click ID" and it's likely intended to evade Safari's "Intelligent Tracking Prevention" on third-party cookies.jtbayly 7y agoThis. We knew this was coming when Safari added that.