Helpful Tip: How to disable backspace/back-button keyboard shortcut.

There have been many time when writing something in Firefox that I accidentally change keyboard focus outside of the text box, and hit the backspace key which navigates me back to the the previous page. It's very frustrating but I haven't looked for a solution until now. So, I just figured I'd share how to disable this.

Navigate to about:config, search for browser.backspace_action, and change its value to 2.

That's it, that keyboard shortcut is now disabled. Hope this helps someone.