The writing program I use on my MacBook is a little gem called Scrivener. I'm not here to push Scrivener, but if you are a writer, use a Mac, and want to be pampered and treated like a Pulitzer winner, then you need to check it out. The recent revamp to version 2.0.1 makes syncing to your iPad a joy.
I knew I would use my iPad to read (not a good eBook reader, my tookus!), but I was concerned about writing with it because syncing Notebooks out to other programs on other platforms was daunting to me.
Daunted, no more!!
I was playing the with the new Scrivener and worked out the sync with Notebooks on my iPad and also on my iPod Touch.
It's like science fiction. It's like having access to a global information access system from wherever I am and on three different platforms for my personal convenience.
One more reason to truly love my iPad because now it is truly integrated into my writing process.