Currently you must know the parent object type and ID as well as the comment's ID to obtain a comment. I propose a new method to return a comment by its ID alone similar to the methods used to return other Jive objects by their IDs.
The reason for this request is to obtain comments that are returned via the search methods. The search methods return results containing the object type and its ID. When the result is a comment there is no way to retrieve the comment because all that we have is its ID.
Result XML from the search methods currently looks like...
<- list of ->
...which yields unusable results for comments.