If you've logged in to your user center today, you might have noticed a small column filled with some golden substance called stardust. Stardust increases the visibility of your stories when readers browse stories by # of favourites. You also get a badge beside your username when you collect enough of it.
You can collect stardust when you post to your wall, publish new stories, or get new favourites/fans. (If you've already published some stories, you might have to unpublish then republish them to get the points.) You can also send stardust to other people to show your appreciation for them or their work. Have fun!