🤝
Make a deal with k0kubun
🔒 Paid proposals held safely in escrow — released only when the work's approved.
Followers
548
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 analysis for k0kubun
📊 Post engagement
19
Avg engagement / post
3.5%
Engagement vs followers
Nov 2022
On Mastodon since
🔥 Top post: Ruby 3.4.5 Released https://www.ruby-lang.org/en/news/2025/07/15 · 39 likes + reposts
📊 Activity & format
Posting cadence
0.18 / week
A lower-frequency account — each post lands with more weight.
Content mix
Mostly text
Recent: 12 text · 0 image · 0 video.
Follower / following
3.3×
Follows 168 back. A more reciprocal / networked account.
Recent posts
View on Mastodon ↗
Ruby 4.0.6 Released https://www.ruby-lang.org/en/news/2026/07/14/ruby-4-0-6-released/
This is a routine update that includes bugfixes. We recommend upgrading your Ruby version at your earliest convenience.
We released Ruby 4.0.5 and published security advisory for CVE-2026-46727.
If you use Ruby 4.0.0~4.0.4, we recommend updating your Ruby version to 4.0.5.
https://www.ruby-lang.org/en/news/2026/05/20/ruby-4-0-5-released/
Ruby 4.0.4 Released https://www.ruby-lang.org/en/news/2026/05/11/ruby-4-0-4-released/
This is a routine update that includes bugfixes. We recommend upgrading your Ruby version at your earliest convenience.
Ruby 4.0.3 has been released. It updates ERB to 6.0.1.1 for CVE-2026-41316.
If your application calls Marshal.load on untrusted data AND has both erb and activesupport loaded, please update your ERB version. You may update Ruby to 4.0.3 to…
Ruby 4.0.2 Released https://www.ruby-lang.org/en/news/2026/03/16/ruby-4-0-2-released/
This is a routine update that includes a bugfix in YJIT for NoMethodError on Puma. We recommend upgrading your Ruby version at your earliest convenience.
Ruby 4.0.1 Released https://www.ruby-lang.org/en/news/2026/01/13/ruby-4-0-1-released/
This release includes a bugfix for Kernel#sleep, along with other bugfixes. We recommend upgrading your Ruby version at your earliest convenience.
Ruby 3.4.8 Released https://www.ruby-lang.org/en/news/2025/12/17/ruby-3-4-8-released/
This is a routine update that includes bug fixes. We recommend upgrading your Ruby version at your earliest convenience.
Ruby 3.4.7 Released https://ruby-lang.org/en/news/2025/10/07/ruby-3-4-7-released/
This release includes an update to the uri gem addressing CVE-2025-61594, along with other bug fixes.
We recommend updating your version of the uri gem. This…
Ruby 3.4.6 Released https://www.ruby-lang.org/en/news/2025/09/16/ruby-3-4-6-released/
This is a routine update that includes bug fixes. We recommend upgrading your Ruby version at your earliest convenience.
Ruby 3.4.4 Released https://www.ruby-lang.org/en/news/2025/05/14/ruby-3-4-4-released/
This release includes a fix for a YJIT bug related to local variables and addresses a build issue on Windows when using GCC 15. It was released ahead of …
Ruby 3.4.3 Released https://www.ruby-lang.org/en/news/2025/04/14/ruby-3-4-3-released/.
This is a routine update that includes bug fixes. We recommend upgrading your Ruby version at your earliest convenience.
🐘 Community & instance
Home server
ruby.social
Their home server on the fediverse — the instance a creator picks signals the community they belong to.
On Mastodon since
Nov 2022
Joined in the Twitter-exodus wave of late 2022 — part of the migration that made Mastodon a real destination.
💡 Facts
🗓️Joined Mastodon in 2022 — 3 years ago.
👁️Averages 19 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 (~3.5% 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.
💚 Brand affinity
EstimatedBrands k0kubun's audience is most likely to respond to — from detected sponsorships in this niche.
Shopify
About
Optimizing Ruby's JIT compilers. ZJIT team at Shopify.
🔀 Audience overlap
EstimatedEstimated shared audience with similar creators — useful for avoiding overlap (or doubling down) when planning a campaign.
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