Quartz, the business site launched by Atlantic Media in September, is now accepting comments for the first time. But rather than opting for below-the-line threads, the site is letting readers comment on individual paragraphs. The new feature – which Quartz calls 'annotations' – launched yesterday. Readers can click on a button alongside the paragraphs and post comments, which are post-moderated, and can then choose to share via social media or email.