Shipping, according to my Spanish/English dictionary means something related to ships, you know, the ones that sail across the sea, yeah, those...
So, what the...? OoO
In case it was the pairing thing DJ mentioned, I like the Misty+Ash pairing, but probably because I like Misty of the three Ash-girl-friends-whatever-he-is-a-fool-he-will-never-get-a-girl-loser