Great idea but wouldn’t you run into storage issues pretty quickly without massive budget for large database clusters? The web is a big and constantly changing place. Covering it in useful comments seems prohibitively expensive.

I’ll cross that bridge if I get there! That would be a great problem to have if it sees such interest/usage.

Keep in mind I’d only be storing comments and the references to where they’re posted. I don’t need to know the webpages ahead of time at all.