#fossilfriday

We track 338 posts using #fossilfriday across 3 networks, carrying 167.6K engagement between them — an average of 496 per post.

It is used most on Bluesky: 205 of the 338 posts we hold, 61% of the total.

Where it performs hardest per post, though, is X / Twitter, averaging 123 — so the tag is posted most in one place and lands best in another, which is exactly the difference worth knowing before choosing where to use it.

Ranking comes from the posts themselves rather than from how often the tag appears, and it is recalculated as new posts are collected. How we measure this →