I can vote up a post but am still unable to vote up a comment - ie. the small print below a response. Do i have to earn an additional privilege (which requires grater amount of points)? Thanks ☺
You can always comment on your own posts. At 50 reputation, you gain the privilege to comment on others' posts.
According to the privileges list, comment votes should be awarded at 15 reputation along with other upvote privileges. However, it is possible that this text is in error and the privilege is actually awarded with "Comment Everywhere" at 50 reputation. Please let us know if you find that ability granted when you reach 50!