It is hard to designate anything a "killer app" on a device platform that hasn't yet acquired "must have" acceptance by the masses.

To that end web/cam apps will help achieve that status for some with the N800. For others it may simple be an in car navigator that also does other things well, and to others still it may be Linux served home networks that can easily be controlled by a small and extremely portable device.

As stated, web/cam apps will soon be available on many new tablet like devices. It is not a stretch of the imagination to believe some of these may have the hardware to do VidIP (video over IP) or VM (visual messaging) better than the N800 can ever hope to do.

What the N800 has over other platform/OS combinations is the ability to do these things concurrently with other operations and to be easily tailored by individual users for security, convenience or both.

"See what I see" technology as well as internal security are perhaps 2 of the biggest, perceived needs of the business community. Motorola has recently invested a lot of dollars in "See what I see" cell phone technology as well as shifting its "Smart Phone" efforts away from WinMo to JAVA on Linux.

The N800 platform/OS lends itself very well to businesses for developing in house networked apps and it could conceivably be a Blackberry killer in that role...

In what ever role the N800 eventually plays, it just needs a little push from Nokia.