I've always done this the other way around, and had the client send back messages to be included into my server logs. Spraying the server logs to clients would

I've always done this the other way around, and had the client send back messages to be included into my server logs. Spraying the server logs to clients would really not be something I'd be very comfortable doing. Certainly not in production, and if I'm developing in debug mode, I've already got the log output scrolling by in a console appender, so seeing it in the browser dev tools isn't really any better or worse.