A little script that adds one-click blocking of flickr contact from the "people who follow you" page (https://www.flickr.com/people/USERNAME/contacts/rev/)

block-contact-flickr.js

/*
  Script for the "Custom JavaScript" chrome extension (https://chrome.google.com/webstore/detail/custom-javascript-for-web/poakhlngfciodnhlhhgnaaelnpjljija)
*/
var BlockContact = function(contactId, callback) {
    var magic_cookie = F.config.flickrAPI.auth_hash;
    var data = {
        magic_cookie: magic_cookie,
        done: 1,
        id: contactId,
        redire: null,
        photoid: null,
        setid: null,
        galleryid: null,
        appid: null,
        confirm: 1,
        submit: 'BLOCK'
    };
    
  $.post("/ignore.gne", data).success(callback);
}

jQuery(function() {
    $(".contact-list-fullname a").each(function() {
       var self = $(this);
       var blockLink = $("<a class='Butt' style='margin-top:-13px;float:right;color:#fff'>BLOCK NOW</a>");
       blockLink.click(function() {
           var contactId = 
             self.attr('href').match("/people/(.+)/")[1];
            
           BlockContact(contactId, function() {
               self.closest("tr").remove();
           });
           
           blockLink.text("Blocking...");
           
       });
       
       blockLink.insertAfter(self);
    });
})