Feedback: I can click on the heart 10 times, and all ten are registered, artificially inflating the 'like' count. Whats more, I can then refresh the page, and c

Feedback: I can click on the heart 10 times, and all ten are registered, artificially inflating the 'like' count. Whats more, I can then refresh the page, and click on it another ten times. And then just keep doing that until the end of time, or an integer overflow.