Why do some numbers (eg. page hits) go down?
“A Fresh Look at your Site” is more than a cute tagline. Mint expires older or excess data to keep the stats it provides fast and relevant for infrequently visited and highly trafficked sites alike.
By default, data is retained for 5 weeks or up to 25MB. This timespan does not apply to the aggregate Total hits and Unique visitors data of the Default Pepper’s Visits pane or other Pepper that store aggregate data.
Once your Mint installation fills out and begins rolling its data, the number of hits displayed for individual referrers, pages, searches, et al. should level off with subsequent increases and decreases reflecting your current traffic patterns.