Hi HN.

I've built a map that takes a geofenced stream of tweets and runs AFINN-111 sentiment analysis on them, and then displays them in real time on a map of London.

Negative sentiments are displayed as Red tweets, happy tweets are Blue.

The whole thing is built on node.js using node-tweet-stream, node-sentiment and socket.io. The frontend map is leaflet with stamen design's Toner tiles.

It's quite fun to watch, especially when there's a football match or a concert. If you click on the "follow tweets" checkbox, new tweets pop up as they arrive, although currently that makes the map pan north.

Thanks!

Dario.