If you want to offer the Guardian, Observer or Guardian.co.uk a contribution, you should consider which section of our newspapers and websites is most likely to be interested. Contact the commissioning editor for this section - ideally by phone or email - and briefly outline your idea.
Inside the Guardian Guardian launches new mobile site
The Guardian's new-look mobile site is optimised for smartphones and smaller tablets, in the first step towards a responsive website. Find out more and give us your feedback