[Feature Request] Adding a "Broken Websites" Category to Watchtower

Interesting suggestion, I like the idea! We'll need to think how it could be done efficiently.

It reminds me that we had website previews at some point in version 3! It was a pretty cool feature where the app would connect to every website and take a screenshot of it:

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We found quite a few edge cases after releasing this feature :) For example, some people were working on Starbucks Wi-Fi and the app would open too many connections and use all the bandwidth. It certainly shouldn't be a problem in this case but here we'll probably need a time interval to rescan the URLs.