Pay particular attention to these lines in this listing: (1) : the UrlArguments class is a small utility class that parses the URL arguments into a hashtable object.

Also, if a particular getter or setter requires special attention, you don't have to sift through dozens of lines of code to find the one you are looking for.

This is important for Facebook's future, because Facebook is so visible, and tends to cross lines when it comes to privacy, which then gets politicians' attention.