I need help with Adblock Plus?

I switched to Firefox today and I want to install adblock, but every time I install it it won't show up in the upper right corner and it won't block ads. I'm using the new Firefox which is the 7 I think? When I first installed adblock it asked me a bunch of filters and I didn't understand what it... show more I switched to Firefox today and I want to install adblock, but every time I install it it won't show up in the upper right corner and it won't block ads. I'm using the new Firefox which is the 7 I think? When I first installed adblock it asked me a bunch of filters and I didn't understand what it wanted me to choose from. So, can anyone help me?
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