We heard you! You asked for more information in your graphs, so now it's possible to see the previous period's evolution in an alert's volume chart!
This lets you easily see how the current period (this week or month, for example) compares with the previous one.
From your Reports, or the Insights Center, simply choose "display" near the "show previous period" option.
Happy monitoring! Let us know what you think! Feel free to share your feedback at any time.