Are you an entrepreneur? If you are, and you've had any success, I'm sure you've "just published" something along the way. It's actually a rather important skill. Not that you should copy and paste something to try it out - you definitely shouldn't - but quick and dirty trial implementations are fairly common.
Edit: Not sure why this is getting downvoted, anyone care to explain? Action in startups is not always deliberate.
Ah thanks. Rereading that, I can see what you mean. I mostly said that to caveat that there are many ways to do entrepreneurship badly, and most of the successful paths involve some amount of shooting from the hip.
I have to agree with you here... Working in a startup is a hectic and crazy lifestyle which involves lots of mistakes, lots of learning, and lots of "hurry up and get x (feature, fix, etc) out the door", which results in mistakes being made. We can all sit around and pretend that we all write bullet proof, meticulously tested, beautiful code all the time and only release things that have been tested extensively and peer-reviewed, but that's just not how it works in the real world most of the time.