If your site doesn’t already have a robots.txt file, it’s generally a good idea to add one. It helps search engines understand how to crawl your site and is considered a basic best practice for getting listed properly in Google.
That said, it’s also worth being cautious about customising it. A badly configured robots.txt can accidentally block pages or assets you actually want indexed.
There’s a great article by Alan W Smith that explains why keeping robots.txt simple is usually the smartest approach:
Fix Your robots.txt or Your Site Disappears from Google
If you’re using Elements, our documentation walks through how to add a simple robots.txt file to your website step by step.
Robots.txt | RapidWeaver Elements Docs