The 'Dead Internet' (specifically AI-generated SEO slop) has effectively broken traditional keyword search (BM25/TF-IDF). Bad actors can now generate thousands of product descriptions that mathematically match a user's query perfectly but are semantically garbage/fake.
We had to pivot our entire discovery stack to Semantic Search (Vector Embeddings) sooner than planned. Not just for better recommendations, but as an adversarial filter.
When you match based on intent vectors rather than token overlap, the 'synthetic noise' gets filtered out naturally because the machine understands the context, not just the string match. Semantic search is becoming the only firewall against the dead internet.
