Some who have downloaded Megaphone from GIYUSare not Zionist agents. 
I have been receiving the alerts but have done the exact opposite as what is advised - when asked to email someone expressing condemnation, I email to express approval and advising them of GIYUS' nefariousness. When asked to rate a video 5/5, I rate 1/5 and leave a disparaging comment.
I encourage others to do the same, as in sufficient numbers we can render them useless.