My .pentadactylrc file is linked at the bottom of the post but if you missed it - https://github.com/mattsacks/dotfiles/blob/master/pentadacty...
It almost looks like it's doing the same thing as the quickmarks (:he quickmarks).
:postToPinboard
when you want to bookmark the current page.
It looks like this is so that when you type <Leader>r, you go to google reader or something. Is that right?
With quickmarks, you press `Mr` or `M<buffer>` while you're on a page to set it, then `mr` or `m<buffer>` to go back there. It's pretty sweet :)