Jetpack's built-in visitor analytics. It records page views, referring sites, search terms, and outbound link clicks, and also carries the shared visitor-tracking library used by Jetpack Instant Search and WooCommerce Analytics.
Service URL: automattic.com (opens in a new window)
tk_ai
Stores a randomly-generated anonymous visitor ID so Jetpack's Tracks analytics library can link tracking events to the same visitor.
Session in wp-admin; up to 5 years on the frontend
tk_qs
Queues analytics events for Jetpack's Tracks library so none are lost if the page closes before they can be sent.
30 minutes
tk_tc
Used once per page load to work out which cookie domain the Tracks library should use, then removed as soon as it's read back.
Session (deleted immediately after use)
tk_aip
Stores a list of anonymous visitor IDs so they can be merged into one identity once a visitor is recognized.
Up to 5 years
I dig these old pictures. The terminal will rise again.
Allan Harris rocks! In 2005, when he was still working in Rochester, he greatly helped with a campaign I helped organize to prevent demolition of Rochester’s old downtown subway tunnel. I had the honor of “appearing” on his radio program twice to talk about the effort.
One of the things that struck me about these photos is the date: 1969 — roughly the halfway point in the Terminal’s life. Interesting to see what it was like there at that point.