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Make a deal with Charles
🔒 Paid proposals held safely in escrow — released only when the work's approved.
Followers
59
Account age
3 yrs
💰 Suggested sponsorship rate
$40 – $65 / sponsored post
Estimated from audience size & typical reach — every deal is negotiable and held in SocialDB escrow.
🎁 Free analysisfor Charles
📊 Post engagement
1
Avg engagement / post
1.7%
Engagement vs followers
Mar 2023
On Mastodon since
🔥 Top post: I‘ve just paid for @tsrono‘s outtr. It’s a name-your-price acqui · 3 likes + reposts
📊 Activity & format
Posting cadence
0.21 / week
A lower-frequency account — each post lands with more weight.
Content mix
Mostly text
Recent: 12 text · 0 image · 0 video.
Follower / following
0.3×
Follows 187 back. A more reciprocal / networked account.
Recent posts
View on Mastodon ↗
RE: https://mathstodon.xyz/@ki_mathias/116436990037018913
A nice summary of how quantum mechanics works in quantum computing.
From https://bsky.app/profile/chalst.bsky.social/post/3mdkifblgv22s:
“I saw Bill Kristol saying earlier this week that Democrats were struggling to coalesce around a specific list of proposals or demands. That’s not what’s important, he sa…
“I would bet that Google makes more ad revenue from the average iPhone user (who, even if they don’t install a single one of Google’s native iOS apps, probably uses Google Search in Safari) than from the average Android user.” — Daring Fir…
"'Made with AI' marketing will not age well. We’re already seeing brands start to shun AI in their ad copy while emphasizing their products are 100% human-made. Consumers will start to associate 'human-made' with higher quality — and highe…
“A [remarkable study](https://faculty.wcas.northwestern.edu/jnd260/cab/CAB2012%20-%20Page1.pdf) in [Perspectives on Politics](https://www.cambridge.org/core/journals/perspectives-on-politics), among the very few to have penetrated this sec…
@oxidecomputer
@oxidecomputer
There’s an explainer by @bcantrill: @mastodon.social
https://hachyderm.io/@oxidecomputer/114954107284365423
Announcing their great funding success, Oxide (@oxidecomputer) summarise their approach.
https://oxide.computer/blog/our-100m-series-b
“In general I’d expect markets to do better with one-of-a-kind information and forecasts to do better with numerical data that is part of an ongoing process.”
From https://statmodeling.stat.columbia.edu/2025/06/17/political-prediction-and-…
I’ve started to read “A taxonomy of bias-causing ambiguities in machine translation” by @lexiconista who uses the term “formality bias” for misuse (in languages that have the distinction) of formal vs informal versions of you. Is this an e…
“Some readers may be aware of studies under the guise of ‘clinical versus statistical prediction,’ most of which have found that statistical models generally outperform or match the accuracy of human predictors (see, e.g., Meehl’s 1954 boo…
I’m back in Berlin, after a half-year where I accompanied my wife on her sabbatical. We were in Singapore, where we lived on the NTU campus, for three months, and in New South Wales, Australia, between Sydney and Newcastle, for another 3 m…
🐘 Community & instance
Home server
mathstodon.xyz
Their home server on the fediverse — the instance a creator picks signals the community they belong to.
On Mastodon since
Mar 2023
An established account with real history on the platform.
💡 Facts
🗓️Joined Mastodon in 2023 — 3 years ago.
👁️Averages 1 views per post.
📤Posts about 0.2× per week.
🕵️ Fake follower check
Estimated80/100
Excellent
Credibility score
97%
Real
Real audience
Low
Fake-follower risk
High
Data confidence
- Est. 97% real, active audience · Low fake-follower risk.
- Strong engagement (~1.7% of followers engage each post) — an active, real audience.
- Established account (3+ years old).
Heuristic estimate from engagement, follower ratios, account age & growth — a screening signal, not a guarantee.
About
Berlin-based logician and early retiree, formerly a freelance academic copy-editor. On Tootfinder.
he/him (privacy-protecting they/them also fine) [Copied from @simrob]
🔀 Audience overlap
EstimatedEstimated shared audience with similar creators — useful for avoiding overlap (or doubling down) when planning a campaign.
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