Shortcodes?

Howdy,

It’s on the long-term road map, but not anything currently being developed.

At this time, my suggestion is to add an After Entry sidebar area (Brian Gardner has a tutorial on his site. If it doesn’t come up first thing in a Google search, let me know and I’ll hunt it down).

With the After Entry area, you can add the widget after posts. Then, using Jetpack (or a similar plugin), you can use Widget Visibility to indicate which pages you’d like the widget to appear.

Hope that helps! Cheers!