game-editor.com

game testers are the most undervalued part of the game design team.

Testing is perhaps the biggest setback most aspiring programmers face. After playing your own level 1 300 times, you can no longer give a proper objective view of your game. In addition, the game testing takes up a huge part of your time, time you could have spent programming.

Get testers! Get help!

Help others by testing the demos they post!

Yeah, people are already doing that a lot.
The best testing experience is when you first time try something. But the good thing about trying your own game, is that you see the bugs faster because you are like trying to cause a bug to be sure everything works.