Where were they sourced?
There is almost zero organic user generated content on that site.Playing devil's advocate, the last (rightmost) point on the graph may well be at 0 until stats are processed or the day ends. The two previous days are weekend days which normally see a dip. Looks worse than it is to me.
Still, would be interesting to see the stats excluding the automated posts.
yes and i believe that's if a single ip/session was 'active' in the last 15 mins.Xen counts spiders as part of that number