If you ask me — and you didn’t, so I will — it’s pretty damned incredible that Michael Arrington and TechCrunch is getting interviews with presidential candidates: McCain today; Romney earlier. It’s just a blog. It’s just a tech blog. But it’s powerful and has an important audience in a critical industry. So candidates are paying attention. That and 10Questions and the YouTube debates are evidence of a political process that’s just beginning to open up.