Quick question; what's the flag link do? Because I don't have enough karma to downvote this link but I feel I need to do something to save others the time of ha

Quick question; what's the flag link do? Because I don't have enough karma to downvote this link but I feel I need to do something to save others the time of having to read this. No disrespect to zerply. I'm sure there are other corners of the internet where this link would be appropriate but it just feels woefully out of place here on HN.