Cross-channel Bar Graphs Show Lots of information

In Cross-Channel > Overview or Cross-Channel > Leaderboard, there are bar graphs which show metrics for multiple companies across multiple channels. Click the channel buttons in these cross-channel bar graphs to temporarily remove the metric for that channel from the graph.
 
In the example below, clicking the square button labeled Facebook would remove the corresponding dark blue segments and the bar values from the graph.
 

Here is the same graph with the Facebook values removed.