Hi there, I thought this might be of some use to you PSP owners who want more storage but don't like paying the ridiculously price for Pro Duo cards...
Here's what you need...
1 x PhotoFast CR5400 - £12.50
http://www.purelygadgets.co.uk/showproduct.php?prodid=26631&wysiwyg=10
2 x Sandisk 16GB MicroSD Cards - £40 each
http://www.play.com/Mobiles/Mobile/4-/6738120/SanDisk-Micro-SD-HC-16GB/Product.html
(out of stock currently but other places do them for about £42)
Total £95-ish inc shipping.
Currently in the UK a 16GB Pro duo card costs around £80 inc shipping
If you're feeling a bit stingy you could get 2 x 8GB MicroSD cards, these are a lot cheaper and you can then make yourself a 16GB Pro Duo card for around £35!!!
The adaptor is exactly the same size as a normal pro duo when 2 MicroSD cards are inserted.
The real Sony 32GB Pro Duo cards aren't coming out until next year! But your PSP can fully recognise the full 32GB NOW.