Will instant messaging be available on the iPhone?

Will instant messaging be available on the iPhone?

Contrary to popular belief, the answer is most likely YES!... sort of. Web applications are going to have a huge impact on the iPhone. As users will not be able to install their own software, they will resort to web applications. Instant messaging can be achieved through sites like XS4All's web chat site.

Officially, the iPhone will not provide native instant messaging functionality.