Any thoughts on the function name? Since we will be returning a single string, I was thinking of changing the function name to one of the following:

* `_s_post_format_label()` - singular
* `_s_get_post_format_label()` - prefixed with `get`
* `_s_get_the_post_format_label()` - similar to other function names e.g. `get_the_date()`

On a similar note, is there a preference on the term *label* vs. *title* (e.g. `_s_get_the_post_format_title()` )? It seems like `title` maybe a better name to stay more consistant with get_the_title().

As for the context name, should this be more generalized in case a user wants to use the label's outside of an archive page? Maybe just "post-format-label".

Let me know if I'm over thinking any of this :)