A week or two ago, this site was at around 1000 visitors / day. Just now I saw that it was showing 2 visitors / day. Huh? I can't imagine traffic just magically dried up for no apparent reason. Is there a problem with the collection of the metrics data, or is something else going on?
This is a known issue with all Stack Exchange sites currently: Traffic (views, visits) isn't correctly registered on Site Analytics or Area 51. SE employees are aware of it, but apparently it takes some time to fix the analytics.