[_manifold]

I would assume they would be inexpensive to host as well. That's a given. I'm more interested in how much money they can make.

Simply running ads doesn't really seem like an issue as long as you're not making the site unusable. I'd be more concerned about the fact that the average user in need of a base64 converter is arguably more likely to be using an adblocker.

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those on the first page of search engine results are more likely to command a higher price. I wonder how much time it would take to reconcile the investment with ads, and likely a reduced userbase. probably years