Thank you guys

all very helpful, my initial guess on karma proved correct aswell as the reasons why it goes up and down so inconsistanly consistant
So pleased now I know where and how to post new threads, thats going to be a great help.
I think I will keep the Karma thingy, just to gauge some kind of referece as to how people percieve me.
However I don't worry to much( honestly) and it will be viewed with a regard to margin of error on both sides of the + and - system, I had noticed this with some of the Eurovision song contest type voting in another thread
Thanks to everyone who helped,