youtube ad blocker for seamonkey?

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Does anyone know a good ad blocker of flash video ads on youtube, for seamonkey?
And a good safe source to download it from?
It's these video ads in a square box to the right of the actual videos.
How can I block them in seamonkey?

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Thought I had AdBlock Plus enabled, but wasn't even installed.
Did the trick. Tnx.

[KynloStephen66515]

Do you often thank yourself, or is it just on special occasions?

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Do you often thank yourself, or is it just on special occasions?

all the time. sometimes i talk to my cat. 

[TaoPhoenix]

Do you often thank yourself, or is it just on special occasions?

all the time. sometimes i talk to my cat. 

That's just fine.

The fun starts when the cat talks back!

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She'll come and sit beside me and reach out and touch my forearm with her forepaw to get me to brush her.
If I ignore her because I'm busy on the computer, she'll keep doing it.  

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Actually, sometimes I mumble, like in a movie.  heehee