Try installing OSM2GO, and start mapping for Openstreetmap around your locality. It's really cool to see your additions up on the internet for all to use.

Use Gpodder to discover new podcasts.

Install the shoutcast client (canot remember the name) and discover and listen to new internet radio stations.

It already looks like you are using the N810 close to it's max though.
As Hordeman says it is a tool, not an end in it's self.