I hadn't realised how slow my laptop's built-in card reader was till this little fella arrived - it's about three times quicker at copying over photos and stuff.
The only snag is I keep getting told cards are write-protected when they're not. Wiggling the card around in the reader's slot generally solves the problem, but it's pretty annoying. I should probably return it but can't quite summon the motivation.
Is it rewritable???? ie, can you delete files straight from USB rather than having to put the card back into the camera and format it???
TO ANSWER MY OWN QUESTION.
Yes it is rewritable, arrived today and can happily transfer/delete files directly from USB
Excellent stuff, recommended especially at this price