I'm trying to get some statistical data from my page using FQL like so:

```
SELECT metric, value FROM insights WHERE object_id=278942378807967 AND metric='page_fan_adds' AND end_time=1327903200 AND period = 2592000

```

However all that is returned is:

```
{
  "data": [
  ]
}

```

I also tried different dates and periods, most of which I'm pretty sure there should be data presented...