"Here is a handy little app we wrote for batch writing all shared parameters located in a shared parameter file to the currently open family. This app will allow for quick consistent adding of the same params to families without having to add them manually which can be very painful."
The original open source version of this free add-in may be downloaded from the BIMAdvent website.
Additionally, Alan Jackson has posted a rewritten and modified version of this free add-in on his openRevit blog site. This version binds the parameters to the "Other" category.