> The following article appears here: http://lwn.net/Articles/129729/
>
>
> Linux users may have been pleased to find that Adobe has finally made
> available a new version of its Acrobat Reader, with accessibility
> features, a much slicker interface than Acrobat 5.x and new and other
> spiffy features. However, there are a few other features that Linux
> users should be aware of. A company called Remote Approach is
> promising to alert PDF publishers as to the "reach and use of their
> materials." We were curious to find out how Remote Approach was going
> to make good on its promise, given that PDF has largely been seen as
> a one-way medium. To find out, we created a test account and uploaded
> a PDF to be "tagged" by Remote Approach, and then downloaded the
> modified document to see whether Remote Approach could log our use of
> the document.
>