Your ad placement should be fine. You might add it within your content instead of putting it above but you can't do a lot more. You could try to add 1 more ad to test some CTR.
I don't understand hebrew, but I think those html symbols could be used by webmasters ( http://www.hebrew-facebook.info/index.php?id=art1&idc=90 ) Can you make the site in english too?