Every Friday you will be emailed a Weekly Activity Report with the subject "Your week on WhatPulse"
This email gives you a summary of what the people you are following have done on WhatPulse over the last week. You will see their accumulated stats for the week, along with their cumulative totals. You will also be able to see whether they join or leave a team, add a computer, or follow you or another user.
You can disable and enable this feature from your profile page in My WhatPulse. The weekly email looks a bit like this: