I use Homeseer RSS script to populate a Homeseer device code with RSS information. Then, I use MLHSPlugin to populate a MLServer variable with same data. Then, I use a custom swf which is a scrollable text window that is hard coded to display a certain MLServer variable. This text window can be on any scene.
I don't have text formatting working so it's messy to read (things run into each other.
Cinemar doesn't today have a RSS reader in Flash for MainLobby. But, it's a great idea!