MAS3:
You have a post count of 3 at this moment.
I don't know, but it is likely that you have to have a minimum number of posts before you can add karma.
Thank you. May be it is not so very good for those who help the new members of the forum. They are loosing lot of karma points because of this restriction, don't you think so? They helped them and don't have any rewords. Just my point of view...