EDIT: Changed title to include "Show HN." Was just fooling around with the Google Charts API and wanted to share. These pie charts represent the top tags in each class of tag that news stories can be tagged with on techwatching. The charts visually show which tags dominate in their class - i.e.: as of the writing of this comment, POTUS is dominating the "People" class.
This is great, I was looking for something similar for a while now! Quick question if you don't mind - Where are you getting your sources of news? I am sure the display algo is proprietary but curious as to what the source of all the news is?