The Macbook Air was introduced to the public on January 15, 2008 at the Macworld Expo, and was available for purchase on January 29, 2008.
Yes
Yes.
The MacBook Air does not have an internal optical drive, but you can buy an external one for $99 at any Best Buy.
most likely all macs come with ichat
Macbook air
The macbook air super-drive is basically a disk drive(like the ones you find in other mac laptops). You can use it to play dvds, cds and games.
Macbook Air.
No, the Macbook Air does not break easily.
The MacBook Pro cases are much larger and sturdier the the MacBook Air cases.
The camera built into current Macs (including the iMac, the Macbook, the Macbook Air, and the Macbook Pro) is known as the iSight
MacBook Pro is the best you can get
For app development for both the design and the coding aspect, the Macbook Air has really nailed it if you do compare Macbook Air with Macbook Pro.