You might have seen here that Channels Media Service by Nokia Labs supports auto rotation 4 ways in N95s and other phones, but here is the official description of the application:

Through Channels, international and local branded publishers provide daily news, sports and entertainment optimized for mobile. You may access your favorite publications via WiFi or GSM, and read either online or offline.

Channels is the new version of the existing Kanavat service that has been piloted in Finland since late 2005. This new international service provides significant improvements to the user interface, makes the content catalogue global and adds on pleasant advertising experience - so that you can enjoy the service for FREE.

The service is very easy to take into use. No registration needed.

Download here