Steganography

Hi all...

I wanted to get everyone opinion on steganography. Lately many experts say it is a better way of protecting information, but I am not sure how true that is. I have clients that I have to e-mail 'classified' information to, so I was looking for ways to protect this information when sending e-mails. Someone told me about steganography, so I decided to do research on it. I found a site that specializes in steganography software
http://www.insight-concepts.com/products/cloak/

So I tried the demo and I bought it. My question is; do you guys think the claims this company is making are valid? They claim files encrypted and hidden with this software cannot be decrypted easy, and it will take years to accomplish. They also claim files that you hide in a image cannot be detected easily. How true is this?

Thanks in advance.....