You should display the address as a QR-code as well, this makes it much easier to pay by phone. You can make the QR-code contain both the address and amount to pay. This makes it super easy for the end user.
Extra credit if you make both the address and QR-code a clickable bitcoin URL. This allows you to launch your favorite wallet by just clicking the QR-code/URL.
Thanks Jan good suggestions. At the moment it is a pain to pay by phone and a QR-code/ clickable bitcoin URL would help solve this. I'll add this to a list of things to do thanks. We already in development of a new redesign of the site so stay tune!
WalletBit Mobile makes it very easy to pay from any HTML5 enabled phone. It takes a picture of the QR, grabbing the Bitcoin address, amount and any related comments. If you are using Opera on Android devices, it even integrates the camera into the page.
https://walletbit.com/mobileOur merchant solutions also make it easy to include a QR and displays a bitcoin address as well. You can receive payment notifications and automatically forward Bitcoins to another address if you wish. Our Bitcoin URI makes it possible to pay in browser with URI compatible wallets. Since we operate on the Bitcoin network, you can receive payments from any Bitcoin address.
https://walletbit.com/businesstoolsHopefully this will save you some development time and related headaches.