Use stacked area plots for percentages

[BenjaminHCCarr]

One thing that may make looking at percentage changes over time like
Tweet classifications

https://twtr-analyser.herokuapp.com/tweet_display/index/05804139/

Would be to used a stacked area plot:

This would also be an interesting way to present any other percentage data, like gender #18, or further enhancements

[gedankenstuecke]

Stacked area charts make it much harder to read the individual percentages as it works with a shifting baseline. Regular line graphs are doing a better job of conveying that information (see also this blogpost on the topic).