Showing geotagged tweets on fancy D3.js (canvas) globe. I've finished this 3 months ago, and it should have had some intelligent part - ie. showing sentiment o

Showing geotagged tweets on fancy D3.js (canvas) globe. I've finished this 3 months ago, and it should have had some intelligent part - ie. showing sentiment over geographical areas, but limits of free Twitter streaming api, draw me back to this. Critique desirable.