We run a very big news site where content changes very often per day. By using the overlay functionality for example it would be very useful to be able to set the report period to "last n minutes" or "hh:mm - hh:mm". Reports for a whole day are not very useful because the positions for the teasers change very often, so we can't analyse which position is the best for which content. This fact makes this feature more or less unusable for us. Even for other reports it would be very useful to have these types of periods for reports.