ISBN-13 support?

I just tried to add a book using the ISBN-13 (the ISBN-10 wasn't listed on the back of the book, and I didn't know how parse it from the ISBN-13), and it couldn't find it...tested it with another book, and it didn't work either. For the first book, I searched Amazon.com with the ISBN-13 and it popped right up. Took the ISBN-10 from Amazon's page and Listal added it fine. So it's workaroundable, but are you going to be adding ISBN-13 support at some point?
The ISBNs tested were:
9781400096862 (ISBN-10 of 1400096863)
9780520246225 (ISBN-10 of 0520246225)
The ISBNs tested were:
9781400096862 (ISBN-10 of 1400096863)
9780520246225 (ISBN-10 of 0520246225)
Deleted user

Another vote for ISBN-13 support. In my box of books this month there were four books that only contained ISBN-13s. I had to go to Amazon and use the ASIN to add all of them. Very annoying! I think that features like this which streamline Listal data entry are the most important.

This really needs to be added as more and more books that I've bought (new and second hand) here in the UK have had only the ISBN-13 on them and I've had to look the ISBN-10 up on Google which is time consuming.

Ok I've updated it to support isbn 13.

Thanks muchly. :)