I don't mind the self-deprecating humor, but it may put off others. Keeping the landing page professional and straight to the point may be to your benefit if yo

I don't mind the self-deprecating humor, but it may put off others. Keeping the landing page professional and straight to the point may be to your benefit if you plan on selling your product in the future. If you plan on keeping it free and open sourced, it probably doesn't matter and may even help with donations. Also, just because an idea is simple doesn't mean it's not a great idea.