Hi Yochention,
The site design is clean and easy to read - that's good.
My very first impression was that I thought the guy in the boat was in his birthday suit! Ha ha...
Anyway, for the icons you have on the top left, I would prefer to have descriptive words like "Sitemap", etc. People may not know that your sitemap is the third icon on the top left there.
I don't like how you have that extra block of Adsense on the right hand side. It would be better if you can have the background the same color rather than the grey that's there. Also you may find that integrating the Adsense in the content area may convert better for you.
Hock