In the Shared Files module it would be nice to see who uploaded the file by adding a "User" table column to SharedFiles.ascx.  The SharedFiles db table contains the "UploadUserID" for each file. Use this to query the Users db table for the login name. I ended up adding a function to SiteUser.cs to easily obtain a user given the user id:

        public static String GetUserNameFromID(int userID)
        {
            String result = String.Empty;
            if ((userID > 0))
            {
                String comma = String.Empty;
                IDataReader reader = dbPortal.SiteUser_GetSingleUser(userID);
                while (reader.Read())
                {
                    result += comma + reader["LoginName"].ToString();
                    comma = ", ";

                }
                reader.Close();
            }

            return result;
        }