What a waste of everyone's time. You know where else it's hard to delete your account? On a ton of Web sites. Many sites do not include this option. I also don't see an (obvious) way to delete your account off of Hacker News. Would you have to email Paul Graham?
Calacanis responds in the comments:<p>"1. No one has ever asked for an export key, but we have one being built. Will be ready shortly.
2. We will have a delete account page by the end of next week.<p>NIce job with the gotcha journalism! :-)"