don't know if this has already been posted or not but GO!Messenger has been released and can be downloaded from the icon on ur PSP. u will need to create an account here
https://gomessenger.bt.com/static/pages/...tisit.html
i can also confirm it works perfectly if u region fake ur PSP to europe as i have just been using it. i don't have a camera yet though so I've only tested the text messaging.
here's how to get it working on non european PSP's
Go go into the Recovery Menu and then into Configuration and go down to Fake region and press the x button until your set to Europe.
Go into Go!Messenger and download it.
Go back to the XMB and click the Go!Messenger icon. It should boot like a game.
Follow the steps to register. It might take a while to load because the servers are in Europe and lots of people are registering. If your country isn't listed then chose another English speaking country.
After you finish registering restart Go!Messenger and log in.
Go!Messenger also lets you call your mates on their PC. you have to download a piece of software for free, called 'BT Softphone 2'. When installed, you can make and receive free PC to PSP voice and video calls. What's more, once you both have the software you can also make calls and send instant messages from one PC to the other.
here's a video of someone using GO!Messenger
http://www.youtube.com/watch?v=Zr7wPQd_lN0