Research and Sources

2026-07-30 additions (New Cycle Day 17)

Profound — "LinkedIn is the most-cited domain for professional queries" (tryprofound.com): LinkedIn #1 most-cited domain for professional queries across ChatGPT, Gemini, Google AI Overviews, AI Mode, Copilot, Perplexity. Climbed #11→#5 most-cited domain overall Nov 2025→Feb 2026.
ALM Corp — "LinkedIn Is the #2 Most Cited Source" (almcorp.com): 325,000 prompts analyzed; LinkedIn ~11% avg citation rate across engines, ChatGPT Search 14.3%, Google AI Mode 13.5%, Perplexity 5.3%.
Everything-PR — AI Platform Citation Source Index 2026 (everything-pr.com): synthesizes 680M+ citations across 6 major published studies (Aug 2024-Apr 2026), corroborating the LinkedIn rise.
AirOps — retrieval/citation study (referenced, held in reserve): only 15% of pages ChatGPT retrieves get cited, 85% found/evaluated/discarded (548,534 pages, 15,000 prompts). Good candidate for a future post on retrieval vs citation gap.
SEOClarity — "Tracking the Decline of ChatGPT's Citations": citation volumes down 86-94% across 5 markets by end of April 2026 — context for why citation counts alone are a volatile, noisy metric (didn't use this run, flagging for a future volatility-themed post).

Credible references for every claim in the 30-day calendar. Use these when writing each post so claims hold up.

https://developers.google.com/search/docs/fundamentals/ai-optimization-guide