XKCD

OK, this is a bit off-topic for the blog, but I really wanted to send Randall Munroe a comment on today's XKCD comic, and I couldn't find a way to do that.

So I'm going to have to do the next best thing, and post it here for the world to see (or that minuscule fraction of the world that reads this blog):

How do you know they're not? It's not like they would be keen to make that fact public so all their competitors could start doing the same...