My commenting system is down. Looks like Disqus screwed it up in the process of fixing a minor problem — lack of a trackback link — and turning it into a big one: no commenting at all! I've asked them to get to work on it. Please bear with me (and them).
UPDATE (4/4/10): This problem looked worse than I thought. My whole Disqus account for this blog appears to be gone! So many people have been so kind to comment already, and those comments may be gone forever. It is important I get commenting going again, since I am planning a giveaway soon!