Thought I'd mention this, as I can't see it already posted...
You can now view your trophies on PlayStation.com by signing in
here using your PSN account details, and clicking on the 'Trophies' button.
More details and a video on
PlayStation Blog.
At the moment, you can only view your own trophy collection, but they'll be adding the ability to view other people's trophies later.
Hopefully an official, auto-updating trophy card will follow shortly, meaning we no longer need to manually update the Playfire cards.