Those 100 calorie packs really make me mad from a consumer's stand point so, I don't buy them! What a rip off. It's like the "whipped yogurt" and all that. They are trying to get you to buy less product for more money. A lot more money.
All that being said, I DO understand the need for portion control but am more an advocate of a "free meal" than 100 calorie packs.
ALL my girlfriends eat them though and pass them out to their kids.