All MEMRI does is translate the words of these evil, hateful people into English so that we will know what sorts of filth they are spreading. If terrorists want to monitor it, I don't see a problem because I'm sure that the trash spewed out by these 'imams' is awfully tame compared with what the terrorists say amongst themselves, off-camera.
They know what we know. That is the problem. What they know we know means ability predicting something to happen next. That is not good.
Translation of arab news is just one of the activities by MEMRI. They also post anaysis and special reports. Valuable news could also alert and motivate unwanted people to act before any damage is done against them. That is no good.