#CriticalMass

Live, measured metrics for the hashtag #CriticalMass from the open social web. Every number carries a named source and the time it was fetched. Nothing is estimated.

hashtag.org network · sponsored

Own #criticalmass

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.

$5.00/ year · 12-character #name
Claim #criticalmass — $5.00/yr→Buy on hashtag.space (web3)
card via hashtag.org · tokens via hashtag.space
8
Uses / 7 days
Mastodon
8
Accounts / 7 days
Mastodon
40
Recent posts
Mastodon
~0.1/hr
Recent pace
Mastodon · last 40
3.2
Avg reactions / post
Mastodon · last 40
—
Reddit posts / month
Reddit search
—
Open-web mentions
hashtag.org Firehose

Day-by-day usage

measured · fosstodon.org (Mastodon public tags API) · fetched 2026-10-16 19:58 UTC
0
10-10
2
10-11
2
10-12
0
10-13
0
10-14
4
10-15
0
10-16

8 uses by 8 unique accounts across the window. Real per-day counts, not estimates. Newest bar is today so far.

Related hashtags

measured · fosstodon.org (Mastodon public search API) · fetched 2026-10-16 19:58 UTC
#criticalmass_bn
1 uses · 1 accounts / 7d
#criticalmassstuttgart
0 uses · 0 accounts / 7d
#criticalmassyyc
1 uses · 1 accounts / 7d
#criticalmassbrussel
1 uses · 1 accounts / 7d
#criticalmassesslingen
1 uses · 1 accounts / 7d
#criticalmassbonn
0 uses · 0 accounts / 7d
#criticalmasshamburg
0 uses · 0 accounts / 7d
#criticalmassberlin
0 uses · 0 accounts / 7d
#criticalmassbcn
0 uses · 0 accounts / 7d
#criticalmasser
0 uses · 0 accounts / 7d
#criticalmasskoln
0 uses · 0 accounts / 7d
#criticalmasshb
0 uses · 0 accounts / 7d

Live pulse

measured · fosstodon.org (Mastodon tag timeline) · fetched 2026-10-16 19:58 UTC

Everything below is measured over the latest 40 public posts (spanning ~468 hours).

Posting hours (UTC) — busiest: 07:00

00:0012:0023:00

Languages: German (27) · English (10) · French (2)

Avg boosts / post: 4.5

Top of the latest posts

  • Following on from yesterday's thread, here are all the active #CriticalMass accounts I could find. Critical Mass is a type of #cycling activism, more info at https://en.wikipedia.org/wiki/Critical_Mass_(cycling) 🇦🇺 AUSTRALIA @CriticalMass

    FediFollows@[email protected]♥ 37↻ 542026-10-11 17:46 UTCView post →

  • °Aufkleber° Edit: Währungsanpassung im ALT-Text #FotoVorschlag #criticalmass #cmHH #closca #fedibike

    Kixka@[email protected]♥ 31↻ 42026-10-03 06:31 UTCView post →

  • Party 'In der Stadt' #FotoVorschlag #frankfurtMain #frankfurt #criticalmass

    Ranga Kullenga :verified:@[email protected]♥ 17↻ 32026-10-12 07:41 UTCView post →

#criticalmass across platforms

every network with a public tag surface

Follow #criticalmass 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.

X (Twitter) ↗Instagram ↗TikTok ↗Facebook ↗LinkedIn ↗YouTube ↗Threads ↗Bluesky ↗Mastodon ↗Reddit ↗Pinterest ↗Tumblr ↗

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/criticalmass