Better to do this to give 5% to charities if you can be bothered.

Aware some people read their app update notifications so may already have this, but if like me you don't then it's worth knowing that Amazon Smile (where Amazon donates 0.5% of the net purchase price to a charity) is now available within the Amazon Android App rather than just via the browser.

To activate, just open the app menu and the Amazon Smile banner is just under Programmes and Features.