I implemented a similar idea a couple of years back, originally as a set of Perl CGI scripts. Nowadays the code is powered by a simple golang server:
The service gets a ton of traffic, and some of it is content I didn't expect. For example I see a bunch of IoT devices logging IPs and temperature details.
At one point a group of students were sharing (binary) notes with each other. They'd each upload a gzip/base64 encoded binary and that was eating a ton of bandwidth. In short expect to be abused.