Yeah, JJ-verse stardates seem quite silly to me. Using them, then the main, first part of the stardate wouldn't change for an entire year. And, I've found in most settings the year is the part that people tend to omit. For example, today is 04/30/2013, but I bet most people where I work will write notes dated 4/30.
So, by the JJ-verse stardates, today would be 2013.120, this being the 120th day of the year. This is silly. It is totally different from how stardates work throughout the rest of the franchise. Also, if it's just the regular Earth date, then why bother calling it a stardate?