It's a browser plugin used by millions to block the display of advertisements on websites, because it's not like the people running those sites have bills to pay or anything. People who would never steal a newspaper justify this by pointing out that some sites have ads that could harm your computer, and AdBlock is just the righteous tool to prevent that. However, it's a little-known fact that big companies can still have their ads displayed, even if a user has the program installed, as long as they pay AdBlock a fee. You might notice this as "completely the opposite of what the program is intended to do," or to put it another way, "complete bullshit."
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