One of the lectures I went to at the ACSM conference was about snacking. The entire time I was thinking about Fit Diva Jill because the speaker was totally dogging the 100-calorie snack packs and Jill is also not a fan of the 100-calorie snack packs. Why? Because they are full of empty calories.
If you want a good snack, try choosing foods that have more nutrients, such as yogurt or a piece of fruit with a few almonds. The other problem with the snack packs are people tend to eat more than one pack, which defeats the purpose.
Link to blog: http://thefitdivas.typepad.com/my_weblog/2009/03/100-calorie-snack-packs.html