ChatGPT Ads: What Changes When the Search Box Talks Back
ChatGPT Ads target conversation context, not keywords. Here's what OpenAI confirmed, what's speculated, and how GEO content prepares you for both.
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Custom Blocks in Obsidian: The Scribe Block
Obsidian doesn't have custom blocks, so I faked it with a code fence, a hidden div, and two features that actually make it useful.
RTX 5090 Local AI ROI: GPU Cluster vs. API TCO Analysis
An RTX 5090 cluster breaks even against DeepSeek API costs at 450M tokens of inference, providing a 14-month ROI for high-volume developers.