Why reach drops on a social account and what the platforms actually publish about it: shadowbans, eligibility states, rate limits, originality rules, and the difference between one real account and an operator running fifty.
A shadowban is not one thing: it is a per-platform label or eligibility state, and most expire. What each platform calls it, and whether any checker can see it.
We read the xai-org/x-algorithm repo today: the enforcement rules, the 30-day label expiry, the cold-start boost, and the one number that replaced TweepCred.
Your LinkedIn SSI score is a Sales Navigator diagnostic LinkedIn is retiring, not a feed input. Here is what actually gates distribution, with the sources.
What "rate limit exceeded" means on X, in the app and in the API: the published post, DM and follow caps, the per-endpoint API numbers, and what it costs.
How many posts per day each platform actually allows: the published hard limits with retrieval dates, the six that publish nothing, and the cadence that works.
TikTok 0 views on a new account is one of four states, and only three are penalties. What TikTok's own rules say, and the exact screen that tells you which.
Instagram, TikTok and Facebook each expose an account status screen. LinkedIn does not. The exact paths, the states they show, and what an appeal really does.
How to build karma on Reddit: karma clears a subreddit's own gate, CQS is the sitewide one above it. What Reddit publishes about both, checked 2026-09-21.
A warmed TikTok account is $25 one-time or $100 a month. Aged Instagram accounts start at $0.17. What the market charges, why accounts die, and who is liable.