yeah, so I just added this topic, and it proves my point: the website says that I posted it 11 minutes ago, and it hasn't even been a single minute. Is it because I have my computer's clock set 10 minutes fast? And is there a way to fix that?

How it works is that the server spits out a GMT timestamp and the javascript (using your browser's timezone offset and current time) turns it into a relative "3 hours ago", "1 min ago", etc. I can't do anything if your system time isn't accurate. Though I think it'd be a nice customization option for users to be able to toggle between relative timestamps ("3 hours ago") and absolute timestamps shifted into your timezone "1/2/2015 3:02pm".

That would definitely be cool, but there's no big rush here.