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Give it a try, search for [super mario brothers] on Google and take a look at the knowledge box on the right. See that coin? Click it and click it and click it and you will score some big points!
Here is a video of it in action:
This easter egg, if you missed it, came out a couple weeks ago.
I bet SEOs will try it to try to boost their rankings. ;-)
Forum discussion at Google+.
This post was pre-written and scheduled to be posted today.
Here is a GIF of it in action:
