Facebook: Poke your friends like a boss!

FacebookPokeFriends.js

setInterval(function () {
    var poke_buttons = document.querySelectorAll('._4-u2._xct._4-u8 ._42ft._4jy0._4jy3._4jy1.selected._51sy');
    for (var i = 0; i < poke_buttons.length; i++) {
        poke_buttons[i].click();
    }
}, 2000);