It’s been more than two years since I posted a simple tutorial on Thumbs Up Thumbs Down Voting with PHP, MySQL and jQuery. That post receives the second most page-views on this blog. People created voting scripts on it. More and more talks happened on its security. Some even mailed me. And admittedly, it was least secure. Refresh the page and vote again! But then again, it was just to show how things work and not meant for production at all.