Featuring John Kirwan, the website is designed to help people analyse how they feel and what they are going through, and determine if they are experiencing depression.
From the website:
Most people feel miserable now and then, often when something upsetting or stressful is happening such as a relationship break-up, or losing a job. Feeling down in response to difficult situations is pretty normal, and usually the feelings fade over time and you get on with life. But when the feelings of unhappiness are intense and persistent - and they don’t go away even when things improve - this could be depression.