#scifi

Live, measured metrics for the hashtag #scifi 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 #scifi

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.

$1,129.43/ year · 5-character #name
Claim #scifi — $1,129.43/yr→Buy on hashtag.space (web3)
card via hashtag.org · tokens via hashtag.space
376
Uses / 7 days
Mastodon
299
Accounts / 7 days
Mastodon
40
Recent posts
Mastodon
~2.2/hr
Recent pace
Mastodon · last 40
0.3
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 2026-10-23 12:00 UTC
60
10-17
60
10-18
64
10-19
42
10-20
53
10-21
79
10-22
18
10-23

376 uses by 299 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 2026-10-23 12:00 UTC

Live pulse

measured · fosstodon.org (Mastodon tag timeline) · fetched 2026-10-23 12:00 UTC

Everything below is measured over the latest 40 public posts (spanning ~18 hours).

Posting hours (UTC) — busiest: 20:00

00:0012:0023:00

Languages: English (32) · German (2) · Italian (1) · Japanese (1) · Dutch (1)

Avg boosts / post: 0.6

Top of the latest posts

  • My buddy @alvekatt.bsky.social is staying with us for a few nights during the Fantastika #scifi convention. I used to go to scifi fan meetups at a pub in Umeå when I taught Archaeology 101 there in 2013-2015, and they were very welcoming. T

    Martin Rundkvist@[email protected]♥ 5↻ 02026-10-22 20:27 UTCView post →
  • Happy Almost-ween🎃 #WatchPartyCalendar Oct 22-29 #Mastodon / #Fediverse 📅details/updates: http://bit.ly/MastodonWatchParties HIATUS: #Comedon till 11/15 NEW(ish): #SatMat w/ @analgesicsleep 🧛🏻 #SusansCinemaStash spooky films (Sun) 📺 w/

    Sesame Squirrel@[email protected]♥ 3↻ 42026-10-23 00:50 UTCView post →
  • American posters for “The Creeping Terror” AKA “The Crawling Monster” AKA “When Terror Creeps” (1964) #TubiThursday #TheCreepingTerror #scifi #horror

    Dr. Dani Sanchez@[email protected]♥ 1↻ 22026-10-23 02:34 UTCView post →

What “scifi” means

Wikipedia

Science fiction is the genre of speculative fiction that imagines advanced and futuristic changes in technology, scientific knowledge, or biological systems. The elements common to science fiction have increased over time: from space exploration, extraterrestrial life, time travel, and robotics; to parallel universes, dystopian societies, and biological manipulations; and, most recently, to information technology, transhumanism, posthumanism, and environmental challenges. Science fiction often e

“Science fiction” on Wikipedia (CC BY-SA) →

#scifi across platforms

every network with a public tag surface

Follow #scifi 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/scifi