I have no argument to back it up :) It's a personal preference. I haven't ever liked the kinds of conversations that Wangston's Law prohibits. IMO, the Internet's ability to answer all unimportant questions (correctly or not) makes purely factual conversation even less interesting.

Maybe there's a corollary with Information Theory, in that any statement that merely repeats data already available on the Internet contains less information than one that does not?