Well in a way you're just offloading the cost of hosting that code/data in that case. Instead of hosting it yourself, the page with the link is hosting that web

Well in a way you're just offloading the cost of hosting that code/data in that case. Instead of hosting it yourself, the page with the link is hosting that webpage. Well it wouldn't really be arbitrary, it'd be specifically HTML and/or JS, for security related purposes.