Has anyone found this site actually useful? As in, you wouldn't have been able to find this information, in a format as nice as this, when you needed it? This

Has anyone found this site actually useful? As in, you wouldn't have been able to find this information, in a format as nice as this, when you needed it? This site just looks like SEO spam to me. But it is number 5 on the 1st page of HN so maybe I'm wrong.