A word of warning: you’ll have to browse or crawl these pages periodically at minimum.

Best case would be to diff the latest page with various IPs and user-agents against the known and then let you know when it changes. Someone will inevitably submit a page that looks good, then changes later or dynamically depending on datetime, user-agent, request IP, etc. to become malicious.

Unfortunately, these are the sorts of problems that many companies have to deal with automatically (like Google) or manually that startups don’t typically.

While you’re charging, if someone can get by with paying $1 for installing ransomware, they may do it.

It’s a neat idea, but it’s risky. I like what you’ve done, though, and hope the artisanal webpage index pays for itself and more quickly.