I'll go with the Alzabo from Gene Wolf's worlds. Mimics the intelligence of anything it eats and begs its prey to be eaten in the voice of (already eaten) loved ones.
The people who submit, don't do so out of momentary stupidity, but because the Alzebo/Loved Ones make such a compelling case that the only way to be reunited again is to join the beast.
... who the hell are these special users that Firefox apparently pander to, and what mass of people do they constitute to make them so powerful?
More importantly, how do I join this special club?