[Brandon Martus]

You control how many you want to see.

Currently it defaults to the past 30 days of active threads.

Look on each individual forum page.. you'll see some sort/filtering options.

They will never be removed, for now... and probalby not until the database backup takes more than 10-20 minutes or gets too big. Currently it takes about 30 seconds to do a full forum backup (18megs of data).