While creating an alert its nice to have alert starting date that way we can define our weekly report. At this point weekly alert is not working as expected. I have weekly Alert setup for last touch channel and its trigger every week which is annoying. And the reason its happening because of wrong date comparison. I remember when i setup this alert the day was Wednesday, so my report getting compare with this week 3 days (sun to tue) vs last week's 7 days. My suggestion is
1. Either set default weekly alert as Saturday or
2. Give an option to define weekly report
-Amarjeet