Own up. I know it's you

I had just got back into town from the Boondocks, and thought I should check my mail. So I turned into one of those Internet cafes which stick bible verses on the computers (to discourage porn-surfers I am told).

The verse on this one has been vandalised. It begins: "Blessed is the man who doesn't walk in the cousel of the wicked..." The rest has been replaced with "but only buys drugs from them."

Who would do such a thing?