With modern debuggers and testing tools, the need for logging is not as great as it once was. But there are times when debuggers won’t do (for example, on players’ machines, or when hunting down bugs that occur sporadically). For these instances, logging can still be useful, and with modern web technology, you can build a powerful logger that is more than just an endless stream of text.
Most game developers know that sharing an early prototype of their Next Big Thing™ with friends and fellow devs is usually a good move. It’s a great way to iron out bugs, gather ideas and start moving in the right direction. It’s also incredibly encouraging to receive positive feedback early on — as long as your audience doesn’t consist of the sort of people who foam at the mouth and start gnawing at every half-arsed pixel push you make.