There was a flurry of discussion about the MacBookAir.com redirecting to:
This redirection is not an endorsement by Apple itself. Anyone can redirect any domain (they have control of) to any other domain and add a "query string" (?text). You can change it to whatever you want, and this query is passed to the web server. In this case, Apple.com ignores the query.
And besides, MacBookAir.com isn't registered by Apple... it was registered by us. If Apple decides to use the MacBook Air name, they are welcome to the domain.