#lightpen
Live, measured metrics for the hashtag #lightpen from the open social web. Every number carries a named source and the time it was fetched. Nothing is estimated.
Own #lightpen
This #name is available to claim. It becomes your portal on the open agent web: this very page, a keyword you rank for by an open public stake, and a verifiable identity for AI agents. Nobody else sells a page like this for every #name.
Day-by-day usage
measured · mas.to (Mastodon public tags API) · fetched 2026-09-27 01:22 UTC0 uses by 0 unique accounts across the window. Real per-day counts, not estimates. Newest bar is today so far.
Related hashtags
measured · mas.to (Mastodon public search API) · fetched 2026-09-27 01:22 UTCLive pulse
measured · mas.to (Mastodon tag timeline) · fetched 2026-09-27 01:22 UTCEverything below is measured over the latest 38 public posts (spanning ~51408 hours).
Posting hours (UTC) — busiest: 18:00
Languages: English (35) · German (2)
Avg boosts / post: 3.3
Top of the latest posts
For the first time in maybe - decades? Someone has a complete, high-resolution CGA light pen system for the original IBM PC. (It's me. I'm the someone) #retrocomputing #lightpen
Here is my light pen demonstration video. Photosensitivity warning: There are some brief flashes of bright white. #retrocomputing #lightpen https://youtu.be/iEIDSnuSWVM
oh shit they got AI in my light pens :( #retrocomputing #lightpen
What “lightpen” means
Wiktionary · Wikipedialightpen
- nounA pen-like device allowing a computer user to interact with the screen display.
A light pen is a computer input device in the form of a light-sensitive wand used in conjunction with a cathode-ray tube (CRT) display.
“Light pen” on Wikipedia (CC BY-SA) →#lightpen across platforms
every network with a public tag surfaceFollow #lightpen straight to each platform’s own tag page. Where a platform publishes open data we measure it above; the rest lock their numbers behind paid APIs, so we link rather than guess.
Every number above is measured from a named public API at the shown fetch time. Nothing is estimated or extrapolated. Platforms that lock their data behind paid APIs are not shown. Agents: the same numbers, as JSON, at /api/hashtags/lightpen