John Hegarty says...
They are free of charge.
Don't like your idea?
Have another one.
And another. And another.
But once you settle on an idea do everything in your power to make it as good as it can be.
Don't listen to people who harp on about minimum viable products.
Ignore anyone who says not to let perfection get in the way of finished.
Because the best way to get people to engage with or react to your idea is to make it as good as it can be.