In terms of "display an article" I'd encourage you to think about what that entails for a platform like ours, it's actually a pretty interesting problem space: near-WYSIWYG editing across 3 platforms, post model vs. HTML (hint we don't store HTML), operational transforms, version history, typographic treatments, copy/paste normalization, ingestion API, etc. It's not rocket science, but it's deeper than you might think at first blush.