Better security and privacy through image proxying

&gt; The image server remains in the dark about who has actually requested it. That’s a big plus for your privacy.<p>Unless, of course, the image has an email-unique key in the URL somewhere.

Also: Reading&#x2F;writing a user-uploaded file instead of serving it directly can reduce the risk of a malicious file being executed by the server.<p>(No c99.php.gif for you!)

Presumably this addition was prompted by Google adding the same thing to GMail earlier this year.