Why visitors bounce of my site? Need help seriously?

I have poured more than $50,000 in my this http://www.etoot.com new social shopping eCommerce site. Recently I have launched it. The traffic is quite good on daily basis but the most saddest thing is that they bounce off so quickly. I don't know why? Is there anything wrong with my site? So plz I would like to know from you guys that why is this? How can I fix this situation?
Help would be highly appreciated!
Thanks,
Regards,
etoot.com
Why visitors bounce of my site? Need help seriously?

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