I've never really looked into Press This before, so I just watched a video at wordpress.com on how this is used. All I can say is wow (definitely a tool to coerce users to abuse copyright content). In my opinion, Press This should be held liable for any copyright infringement, as well the person who uses it. But to say that it's simply a tool of convenience is ignorant because they know many will use it in questionable ways.

When used, the link back to the original article is ridiculous because a person can easily delete that. If anything, I'd like to see Press This only allow 10% of the content from a given URL and not have the ability to grab media or images. I'd like to also see it not allow scraping content from a page that has a meta tag "rights" applied.

As for the graphic for this article (see above), the tagline "Lightning Fast Posting" is another way of saying "Use me, Abuse me instantly".