XML data vulnerable

I see a potential prob with XML documents. When displaying an XML document, with XSL or not, the XML data is there in the document source, raw as can be. Now I understand that this is part of the design of XML but doesn't this then leave the data open to be ripped off quick and easy if desired? What if for instance, you were displaying a list of email addresses and names. How difficult would it be to create a script to crawl the site and steal this info since we make it easy for them and display the actual data, no munging required? Seems pretty simple to me!

The only way I see around this is to load the XML and the XSL with javascript so that the code is just a shell.

Any comments?

Perhaps:

<email>
<user>johndoe</user>
<domain>internet.com</domain>
</email>

Is an effective way of deterring spammers, but if you are talking about actually protecting the information of an XML document, take a look at XML Encryption:

http://www.w3.org/Encryption/2001/