You can find released PSP themes here.

General customisation discussion.  Also customisation questions go here.
Sub Forums: PSP Customisation Developments, PSP Customisation Tutorials / Guides

Any discussion related to the PSP which doesn't fit under other categories.
Sub Forums: PSP News, PSP Help [closed]

Who can't live without technology?

The evil that is known as computers, which will soon take over the world (if they haven't already).
Sub Forums: Computer Compendium, Programming, The Internets

No-one knew that the invention by Bell would be so popular.

Discussion on consoles excluding the PSP.
Sub Forums: Nintendo, Microsoft (Xbox), Sony Playstation

Discussion/rumors/pics on Somy's upcoming Massive Gaming Device (aka the PSP 9001) or Nimtendo's 4PS (4D Penta-Screen).

Everyone loves e-art.
Sub Forums: SOTW & Battles

Discuss anything related to video games, TV, movies etc.
Sub Forums: Multiplayer Meet

...you know, that senseless Japanese stuff...
Sub Forums: Anime Discussion

Here, people converse about the beauties of Bach and Beethoven... or not... >_>
Sub Forums: Music Ratings

Peculiarities of society, or perhaps, the boring life of some nobody.  You get the idea...

Oh yes, the world bows down to you - everything is there just because of you...
Oh, and if you're new, why not poke your head in here and show that you truly are someone to be respected?
Sub Forums: Forum Blogs

Blah blah blah blah blah blah
Sub Forums: Pictures, Boretube

HELP HELP I'M BEING REPRESSED!
Sub Forums: The School (Cancelled), Epic Debate, The House

It's all about the E-Planet.
Sub Forums: PSP-Hacks Parody (1st Apr 2008), April Fools Forum

Forum for community cooperative (or competitive) activities - ie group projects, game contests etc.