This module use Userpoints API.

Features:

• Users earn points for creation new Terms
• Users earn points for adding Terms to Nodes

Installation:

• Download and unzip
• Copy userpoints_terms folder to "sites/all/modules/userpoints/"
• Activate and set points under "admin/config/people/userpoints/settings"

Releases:
You can download and test developer version. This version works on my home server without errors. I work on new stable version and I'll upload it soon.

Demo video you can see here.