You can use an RSS news reader to find out what is new in a TWiki web. This complements WebChanges that shows recent changes in a web, and WebNotify where people can subscribe to get notified of recent changes by e-mail.
For the Main web, point your RSS news reader to:
http://wiki.arch.ethz.ch/asterix/bin/view/Main/WebRss
For other TWiki webs, replace /Main/ with the name of the web: