This new keynoting addin from Kiwi Custom Solutions stores per-project Keynotes in a database to solve concurrent access problems. Revit 2015 allows some interesting pathing to happen for keynotes, that looks like this:
Using this addin, you can either create a new set of keynotes for each project (based on a template), or you can “link” projects to one common keynote definition (allowing an entire office to work collaboratively on one master keynote file).
EDIT: This seems to be broken in 2014 at this point. Even if you have it working in 2013, when you open in 2014 it will “break”. I’m unsure if there is a good workaround yet…
Absolutely awesome workaround from Dave Light! He shows how to use an instance Shared Parameter to pass Keynote value via a Family formula to allow the tagging of Window Mark and Keynote in the same tag. Read the whole post here.
On a wider level, this method shows that you can formulaically reference System parameters (built in family parameters) and pass their value to a Shared Parameter to allowing tagging.
BIM Aficionado posted a while back about using Generic Annotations and Note Blocks as a workaround for genuine Keynoting. I have posted about similar things before, although I am more proud of my Keynote Legend workflow.