Feature summary (what you would like to be able to do and where):
In thank log, display the specific changeset for which a user is being thanked by another user.

Use case(s) (list the steps that you performed to discover that problem, and describe the actual underlying problem which you want to solve. Do not describe only a solution):
This information is helpful in detecting positive collaboration between two or more users on shared topics.

Benefits (why should this be implemented?):
Encourage more social editing. In the future, we could potentially suggest a "friend list" to users based on shared interests.