I've had a few questions, so I thought I'd start keeping them here. Feel free to reply and ask more.

How many items are shown? How do you determine which ones to show?

Right now we're showing 25 items at a time. This could potentially be quite hard on the server, so we may have to lower it a bit. We'll see.

They're displayed based on a handful of popularity ranking (replies, views, age, etc).

I added a post. Why didn't the post count at the top go up?

The image at the top with the post count is set to update hourly. However, if you refresh the "GEboards - Stat Overlay" network link in your sidebar, it will update immediately.