Im always on Youtube searching for exploits and such. Every time I do though I see some kind of scam where people who play online games will alter the page using a simple javascript code (specifically how much gold they have), then they will offer to give you "free gold" if you just let them log into your username using your password. This is a absolute scam. Im going to expose how these scam artists do it.

All you do If you want to alter any page from your browser is just to put "javascript: document.body.contentEditable = 'true'; document.designMode = 'on'; void 0" in your web address bar then hit enter. Now you will be able to edit the website your viewing.

Here's a video demonstration of how the whole scam is done, and reveals why it is a scam.