Genjutsu – Dev social network where posts vanish in 24h
Ephemeral social network premise is interesting, but solves no real friction versus Twitter/Discord.

One post for life constraint creates genuine tension no other platform has.
Curious internet users, social experiment enthusiasts
PostSecret · One Second Everyday
Ephemeral social network premise is interesting, but solves no real friction versus Twitter/Discord.
Hard cap of 31 users per island with no exits creates forced intimacy and accountability.
Write-once-read-once mechanic exists in Snapchat and Telegram already.
DynamoDB conditional writes solve race-free deduplication without distributed locks.
Nice visit-limiting mechanic, but LeechBlock already handles schedules and quotas better.
Sync YouTube viewing exists—Watch2Gether and Scener already do this.