I'd thought about doing the calorie stats/recommendations bit too - similar to what was in the spreadsheet. However, decided against it since I wasn't using that part of the spreadsheet, and 'cause I didn't want this work taking over too much time. If people are really interested in it though, I can take some time and add those features in too.
If you're interested in feature requests, I'd love to see it give calorie intake recommendations, like in The Hacker's Diet.
But I understand if you aren't planning on major development. Thanks again.