So Very Invasive! I put this add-on on my Firefox, thinking it would function like other, similar ones, and pop up now and then with a better price on Amazon, but nooo, it pops up on every page that sells anything, and no matter how many times I close it, it keeps popping back up, and it's offering the same item I'm looking at, but often for a HIGHER price than what I'm looking at, which is ridiculous. You're not offering me anything useful at all, and you're being way overly pushy about it. I'm uninstalling this, I just stopped long enough to write a bad review and I'm outta here. Ciao!