Hi,
Yedda in Hebrew means knowledge. Please look at the title "People sharing knowledge".... one can ask any question one likes (well, almost) and people provide the best answers they can. Good answers are creditted with "thumbs up" (1 or 2) and answer that didn't really helped get "thumbs down".
It's great fun, one can get excellent answers, on any subject, it's free, and one can meet really gr8 pwople.... above all one can learn a lot....
Welcome and enjoy.