Not All Cacao Is Made Equal

This weekend I bought a bag of cacao nibs from the Whole Foods in Union Square (NYC). When I was making a smoothie later in the day I tasted the cacao (before I put it in the smoothie) and it tasted totally rancid. The distribution company was eatraw.com, but I'm not saying it is their fault. I've had eatraw.com cacao before and it tasted fine.

This has happened a few times now (with multiple companies) and I'm just curious to see if anyone else had issues with rancid cacao.

This isn't a plug, but this has never happend with rawfood.com cacao. Is it because they have a higher turn-over being a bigger company? Therefore the cacao nibs aren't sitting around as long exposed to the air?

Feel free to post your thoughts in the comments section.