Bookmarks are the truest signal on X. People like opinions, they bookmark what they plan to use. So we mine three lists each week: what AI builders saved, what AI got seen, and what all of X saved (to catch the practical stuff outside our lane). Window: Thursday→Wednesday.
NotebookLM is a quiet trend — two how-to posts in the top 10 (#9, #10). Teachable, brand-safe, "Steal This" material. #5 is Sam Altman on "AI that benefits everyone," which corroborates the Trump-shareholder news story. #3 is the week's biggest pure technique (Claude + jina.ai) but it's "bypass website restrictions" — grey-area, leave it off air.
Views = reach, not utility. This list is the Fable 5 launch wave end to end. Two things to grab: #5 is Karpathy (real, 2.48M views) praising Fable 5 — that's your citable anchor, on the model, not "agentic engineering." And #10 is the cold open: a 45K-like joke, "turn off AI for a week to see if people's brains still work." Relatable, funny, opens the show.
Outside AI, bookmarks split two ways: a clever practical hack or pure viral emotion (memes, giveaways, politics). The crossover gold is #1 — the most-bookmarked post on all of X this week: a guy reverse-engineered his Whoop to find which coworker stresses him out. That's "get more out of the data you already have" going viral, and it's your thesis. Everything below it is reach, not utility.