Switch to utm_source/medium/campaign tracking for GA4

README.md

@@ -18,7 +18,7 @@ language:
 
 ## What is Crazyrouter?
 
-[Crazyrouter](https://crazyrouter.com/?ref=huggingface) is an AI API gateway. Instead of managing separate API keys for OpenAI, Anthropic, Google, DeepSeek, and dozens of other providers, you use **one key** to access them all.
+[Crazyrouter](https://crazyrouter.com/?utm_source=huggingface&utm_medium=tutorial&utm_campaign=dev_community) is an AI API gateway. Instead of managing separate API keys for OpenAI, Anthropic, Google, DeepSeek, and dozens of other providers, you use **one key** to access them all.
 
 It's fully **OpenAI SDK compatible** — just change the `base_url` and you're done.
 
@@ -26,7 +26,7 @@ It's fully **OpenAI SDK compatible** — just change the `base_url` and you're d
 
 ## Step 1: Get Your API Key
 
-1. Go to [crazyrouter.com](https://crazyrouter.com/?ref=huggingface)
+1. Go to [crazyrouter.com](https://crazyrouter.com/?utm_source=huggingface&utm_medium=tutorial&utm_campaign=dev_community)
 2. Sign up (free tier available)
 3. Copy your API key (`sk-...`)
 
@@ -193,7 +193,7 @@ client = OpenAI()  # Reads from env vars automatically
 A: Yes. Any tool that works with the OpenAI API works with Crazyrouter. Just change the base URL.
 
 **Q: Is there a free tier?**
-A: Yes. Sign up at [crazyrouter.com](https://crazyrouter.com/?ref=huggingface) to get started.
+A: Yes. Sign up at [crazyrouter.com](https://crazyrouter.com/?utm_source=huggingface&utm_medium=tutorial&utm_campaign=dev_community) to get started.
 
 **Q: How many models are available?**
 A: 624+ models from 20+ providers, and growing.
@@ -205,7 +205,7 @@ A: Absolutely. See our [LangChain guide](https://huggingface.co/xujfcn/Crazyrout
 
 ## Links
 
-- 🌐 [Website](https://crazyrouter.com/?ref=huggingface)
+- 🌐 [Website](https://crazyrouter.com/?utm_source=huggingface&utm_medium=tutorial&utm_campaign=dev_community)
 - 🤖 [Live Demo](https://huggingface.co/spaces/xujfcn/Crazyrouter-Demo)
 - 💰 [Pricing](https://huggingface.co/spaces/xujfcn/Crazyrouter-Pricing)
 - 📊 [Model Pricing Dataset](https://huggingface.co/datasets/xujfcn/Crazyrouter-Model-Pricing)