WhatA search engine layer or browser extension that lets users permanently block specific domains and content sources from their search results, with shared community blocklists.
SignalUsers are vocal about Google removing its domain-blocking feature and YouTube's recommendation controls being ineffective — they want real, permanent control over what sources appear in their search and content feeds, especially to filter AI-generated spam sites.
Why NowThe flood of AI-generated SEO slop and content farm sites has made search result quality visibly worse, driving users to paid alternatives like Kagi specifically for this feature — proving willingness to pay.
MarketBillions of daily search users; Kagi charges $10/mo and is growing rapidly, proving the TAM. Google and Bing offer no equivalent, and uBlacklist is a niche extension with no social features.
MoatCommunity-curated blocklists create a network effect — the more users contribute, the better the shared filtering becomes, making it hard for a new entrant to match the coverage.
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