I'm hesitant to put in my PSN password on the Playfire website, people were bitching before about Playfire sending spam messages to everyone in your friends list since it required you to log into your XBL account through the website (even though you can't send messages through the ps website, still kinda unnerving).
Anyways, now that you can pull data from servers for trophies, probably useless now to keep my Playfire card updated.