Karma is the way a member can give a say feedback to the information provided by the respective member.--in simple words.
See My Karma is 7 this means 7 members on the forums have given me a Thumbs up for the information/help I provided to other members that satisfied their queries.
One member can give karma(up or down) for only 1 member for every 6 hrs. It is not necessary to give a karma but it will give a feedback to the respective member about his/her work on the forums and help to others.
So members whenever you get satisfied with any queries then just give him/her a up karma and motivate that member to keep up the work.
you can also rank a negative mark.
