OK, so there's a memetracker web service called Visibility Index that claims to monitor "positive" and "negative" Internet activity about your company. Seems either Caterpillar, Inc. or someone with an interest in them is using it.
On Sunday, I used a metaphor and described Thomas Barnett as being like a Republican caterpillar beginning to stretch out the beautiful wings of shrillness. This made me, briefly, a top-five source of negative PR points for the manufacturer of diesel engines, bulldozers, and such. If I'm not very much mistaken, this post should repeat the experiment.
I imagine the working principle is that it searches Google for [company name], then carries out some sort of test to sort "positive" and "negative". It can't surely have been the word "Republican" that done it? Caveat emptor.