If you have Autofill set up and enabled on your browser settings, POGS, it'll give you the option of filling in your details for you automatically every time you start to complete online forms, including Gransnet competition forms. It's a good time saver. Your details can be full name, address, email address, telephone number etc, depending on what information you set it up with at the start.
How to set it up will depend on your browser. It'll be through the Settings procedure. If you use Google Chrome, you click on Customize and Control Google Chrome at the far right of your toolbar. Select Settings, go right down to Advanced Settings, then down under Passwords and Forms, tick Enable Autofill.