Why did you build the site?
I wanted to try making a really intuitive deck builder and having a deck database just made sense afterwards. At the time, there was only one other site for decks and I felt that there could be improvements. There definitely can still be improvements on this site too.
How did you capture all the card images?
Manually. One by one. If someone comes up with a way to do this automatically, I'd love you forever.
Is there an API to pull information from the game directly?
No, maybe one day they'll give us the ability to do this.