Stream IDs
Streams can be feeds, tags (folders) or system types.
feed/http://feeds.arstechnica.com/arstechnica/science- Feed.user/-/label/Tech- Tag (or folder).user/-/state/com.google/read- Read articles.user/-/state/com.google/starred- Starred articles.user/-/state/com.google/broadcast- Broadcasted articles.user/-/state/com.google/annotated- Annotated articles.user/-/state/com.google/like- Likes articles.user/-/state/com.google/saved-web-pages- Saved web pages.