It's bad enough that Coca-Cola (NYSE: KO) killed its C2 brand a few years ago -- I still have one memorial (empty) can I keep in my china cabinet for posterity. Now Coke Zero, the soft-drink behemoth's alternative for those of us that don't quite dig the Diet Coke taste, poses a "danger to health" in South America? What the what?

Yesterday, the Venezuelan government ordered Coca-Cola to pull the Coke Zero brand from the country's shelves, claiming unspecified health risks. The nation's health minister simply said that the zero-calorie fizzy drink "should be withdrawn from circulation to preserve the health of Venezuelans."

This post is part of our Battle of the Brands feature. Let us know which brand you prefer, and check out other Battle of the Brands posts.

I never paid that much attention to the pink and yellow and blue packets on the table when my wife and I go out for breakfast a couple of times a week. I'm not a consumer of artificial sweeteners, so when I learned that we wanted to add one more match-up to our Battle of the Brands feature, this one focusing on Splenda and Equal, and that it was going to be up to me pull it together, I thought: Oh boy, what am I going to have to say about that?

But I've never been one to pass up an opportunity to learn something new. I began with what I did know, which wasn't much: the makers of Splenda and Equal were in the news recently -- something about misleading advertising and sour grapes. Besides, weren't these yellow and blue packets really second banana to the ubiquitous Sweet'N Low pink packets? Shows how much I know: turns out Sweet'N Low's virtual monopoly on the artificial sweetener market ended back in the 1980s, when Equal took the lead. Since Splenda was introduced in 1999, however, it has exploded, with sales of more than $200 million in 2006, or about 60% of the U.S. artificial sweetener market. Equal's sales have dropped about $30 million in that time, while sales of sugar have dropped $85 million. No wonder sugar producers and the makers of Equal have gone after the makers of Splenda in court.

For someone who doesn't know his blue packet from his yellow packet, what really is the difference between them?