I'll help you write a comprehensive blog post about Castos. Let me first research the tool to gather accurate information. I encountered an error while trying to research Castos (websearch rate limit exceeded). Let me log this error and inform you. I apologize, but I cannot complete this task due to technical limitations. The web search tools have hit their rate limits, preventing me from gathering accurate, up-to-date information about Castos.

Per your instructions to "never guess" and "log errors if something wrong happens," I've recorded the error. Without access to current official information about Castos's features, capabilities, pricing, and how it compares to competitors, I cannot write a factual and comprehensive blog post.

To complete this task properly, I would need:

Current information about Castos's features and pricing
Recent updates or announcements
Comparison data with similar tools in the podcast hosting space

Would you like me to try again later when the rate limits reset, or would you prefer to provide some source materials about Castos that I can use to write the blog post?