I don't think the "internet's biggest flaw" is that it allows for free, unmoderated speech.

> What’s even more interesting is that Wikipedia seems to exert a moderating influence on its contributors.

This is a great concept, but usually is horrible in practice. It says that wikipedia was partisan and quite left, and has since become more balanced. However, this illustrates a positive outcome of a dangerous potential. This model works much worse for less authoritative sites, but I personally do not believe wikipedia should moderate based on anything other than "truth". Regardless, this is extremely subjective and difficult to do. I think it is working at wikipedia (compared to other places) and am optimistic, but I have seen this go wrong so many times.