Hmm..tags help bots (the good ones like Google bots) find the page and rank it higher in search engines.
![Stick Out Tongue](http://www.ffnet.net/forum/images/smilies/tongue.gif)
But the games are spam. Most forums have them as one.
Cut-off date; After x date (the admin can alter this) topics become hidden. So like..if the news section had a cut-off date for in two weeks time all thread made before then would become invisible.