Here's a shot of the Ethernet socket. freesat boxes have these because in the future there's talk of using your existing broadband connection to send data back to broadcasters, as a way of interacting with TV shows and such.
More exciting is the idea of using the Ethernet socket to get video over the Internet, and of course everyone knows the endgame here is to get iPlayer up and running using this system. freesat decoders and TVs make the ideal way for the BBC to get its on-demand TV service into the living room. You can bet the boffins are working on this right now -- it's just a matter of time before it actually shows up.
In an ideal world Panasonic would have allowed this to be used to watch video downloaded from the Internet on the TV too, but that's just a pipe dream sadly. Unless someone invents a hack.

