I think the IM, messaging, and phone integration (despite a few shortcomings on email and phone features) is amazing on the N900, and that this advantage is poorly understood. It is far better than anything the iPhone or any other phone has to offer. For some reason, even with the current drive to build facebook apps into every phone, this integration is not touted as a HUGE advantage for this phone.

I am not just talking about the ability to share photos and videos easily (though that is an area where the N900 excels), but also the easy integration of ALL forms of communication with ANY app through the open apis of telepathy.

As an example--I just took the morning off to go on a school field trip with my son's kindergarten class. I turned on the IM clients on my phone to stay in touch. I got a few emails while riding on the bus (ignored some more when we were at the Nature Center, of course), could glance at the home screen to see if someone was online, took a few pictures and emailed them to the teacher, posted another to facebook, fielded a call or two, showed my son's friends the goofy pictures of him we took the other day, etc.

I know you can do alot of this with different apps on the iPhone (or other phones), but I did all of this with the N900's built-in apps and interfaces. I didn't have to quit the IM app to start a different app for sharing or emailing pictures. The text message I got from my wife was on the same interface as any IM I received or sent. Uploading a photo on facebook and sending one on email were through the same sharing interface launched from the photo itself. Just the mere fact that any app or process I run can access data from any other app (for example, any app on the phone can directly access the photo files or something downloaded to my home directory or received from an email) makes this a more flexible platform that what you more commonly see out there on phones.

This integration is actually the thing that attracted me to the phone. And it was everything that was advertised. And the potential for it to expand as the new QMobility classes in Qt come online with PR1.2 and Meego is amazing. I will place no bets on the iPhone going away (lots of people want a dumbed-down system with one button and no ability to screw it up), but the N900 is ALREADY the phone you want if your communication needs are more complicated that occasionally checking your email and firing off a text or two.