Marc A. Kastner✓ Add us as a preferred source on Google
🔄 Data last refreshed 1 day ago
🤝
Make a deal with Marc A. Kastner
🔒 Paid proposals held safely in escrow — released only when the work's approved.
Followers
67
Account age
6 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 Marc A. Kastner
Known for
7 views
Mia sabato. Februaran Monato-n alvenis. 🤗
6 views
… kaj nun ankaŭ havas PIV. 😊
PIV ricevis kiel kristnaska donacaĵo de mia patrino sed dauris iom tempon por alveni al Japanio.
6 views
Mi fotis la lunan eklipson kion okazis en Japanio hieraŭ nokte. https://www.flickr.com/photos/makastner/52486454088
4 views
Mia edzino kroĉetis min tion. 💕
📊 Post engagement
Recent posts · likes + reposts
Dec 17latest
4
Avg engagement / post
2–6
Typical post (engagement)
6%
Engagement vs followers
77/100
Very consistent reach
Dec 2019
On Mastodon since
Half of recent posts land between 2 and 6 likes + reposts (median 4) — a dependable floor a sponsored post can count on.
🔥 Top post: Mia sabato. Februaran Monato-n alvenis. 🤗 · 7 likes + reposts
📊 Activity & format
Posting cadence
0.04 / week
A lower-frequency account — each post lands with more weight.
Content mix
Mostly images
Recent: 4 text · 8 image · 0 video.
Follower / following
1.6×
Follows 43 back. A more reciprocal / networked account.
Recent posts
View on Mastodon ↗
🔥 Top post
Mia sabato. Februaran Monato-n alvenis. 🤗
Mia edzino kroĉetis min tion. 💕
Mi aĉetis libron de @kallekn kaj autaŭĝojos legi ĝin en semajnfino. 😊
… kaj nun ankaŭ havas PIV. 😊
PIV ricevis kiel kristnaska donacaĵo de mia patrino sed dauris iom tempon por alveni al Japanio.
Mi aĉetis PMEG. ☺️
Mi ricevis la februaran revuon de Monato je mia naskiĝtago 😊
Matenmanĝo kaj legu revuon (estas Monato 2023/01)
Mi fotis la lunan eklipson kion okazis en Japanio hieraŭ nokte. https://www.flickr.com/photos/makastner/52486454088
Mi skribis raporton pri mia vojaĝeto al Himeĵi, Japanio. https://www.mkasu.org/@/page/wOJQIAPFHnpWUGrF
Mia avo forpasis unu tagon antaŭ kristnasko. 😭
Mi skribis pri kristnaskaj kutimoj en Japanio (kaj kiel mi kiu estas germano sentas pri tio.) https://www.mkasu.org/2019/12/kristnasko-en-japanio/
Mi nun aliĝis al UEA.
🐘 Community & instance
Home server
esperanto.masto.host
Their home server on the fediverse — the instance a creator picks signals the community they belong to.
✅ Link-verified
Verified link
Proved ownership of a website linked on their profile — Mastodon's green-check verification, a real identity signal rather than a paid badge.
On Mastodon since
Dec 2019
An OG fediverse account from Mastodon's early years — a long, established presence.
💡 Facts
🗓️Joined Mastodon in 2019 — 6 years ago.
👁️Averages 4 views per post.
📤Posts about 0× per week.
🕵️ Fake follower check
Estimated75/100
Good
Credibility score
92%
Real
Real audience
Low
Fake-follower risk
High
Data confidence
- Est. 92% real, active audience · Low fake-follower risk.
- Engagement (~6.0% of followers engage each post) is around typical for Mastodon.
- Verified account.
- Established account (6+ years old).
Heuristic estimate from engagement, follower ratios, account age & growth — a screening signal, not a guarantee.
💚 Brand affinity
EstimatedBrands Marc A. Kastner's audience is most likely to respond to — from detected sponsorships in this niche.
About
Mi estas denaska germano kiu loĝas kaj laboras en Japanio dum jardeko. Mi esperantiĝis ĉirkaŭe 2016.
Miaj ŝatokupoj estas lingvistiko, komputiko, lerni lingvojn, fotado, videoludoj, ktp. Labore, mi estas asistanta profesoro kaj esploristo de komputiko.
En mia blogo (ligita supre), mi skribas en Esperanto pri miaj vojaĝoj kaj montri bildojn, kiuj mi fotis.
Ĉi tiu konto, mi hupas nur en Esperanto. Mi hupas en la angla lingvo, plimulte pri akademiaj aferoj, ĉi tie: https://social.lol/@mkasu
📸 Gallery
🔀 Audience overlap
EstimatedEstimated shared audience with similar creators — useful for avoiding overlap (or doubling down) when planning a campaign.
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Frequently asked questions
How much does Marc A. Kastner charge for a sponsorship?
Marc A. Kastner hasn't published fixed prices yet. Send a proposal through SocialDB and agree terms directly — your payment is held in escrow until the work is approved.
How do I contact Marc A. Kastner for a brand deal or collaboration?
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How many followers does Marc A. Kastner have?
Marc A. Kastner has 67 followers on Mastodon.
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