The Mac's biggest threat is believed to be Apple itself rather than Microsoft Windows.

In a conversation at a Goldman Sachs technology conference, Apple COO Tim Cook revealed that Apple is a "mobile devices company," and that more devices will get the iPhone OS.

Afterwards, AT&T's CEO revealed that the iPad would be a Wi-Fi product and not something you tote around and use on the street.

This clearly signifies that no independent software stores, fewer open-source projects, and perhaps a blanket ban on BitTorrent, Flash, and Firefox.

The Mac is reported to be no longer a PC as we know it—it will be an "end-to-end experience" like the iPhone.

Today, Netbooks and nettops have been widely popular in the Windows world, and it seems like Apple will try grab some of its buyers with iPhone OS-running mini-PCs.

The major difference between a Mac and an iPad isn't ARM vs. X86, or multitouch vs. mouse.

The new iWork for the iPad poses as an evidence that Mac-like productivity apps and ARM-based platforms can go well hand in hand.