I'm trying it out right now, and so far it's an okay experience. It was a bit difficult to find the HOW information, which was what I craved the most. A little too much of 'look how cool we are!' to wade through. I don't like that I sat for 5 min. thinking; yes this is great - but how do I BUY stuff?
I haven't been able to find content for sale - yet - most of it seems to be sample chapters, and while it's nice to try things out, I wan to be able to buy the whole book right away.
Edit: I can see whole books for sale, but there seem to be a lot of books where they only have the first chapter (for now?). I won't even try to start a book unless I know I can get all of it.
The setup seems really easy to use, because it's synced both online and mobile. I only have an iPod Touch though, and free, accessible wi-fi hotspots does not abound where I live, so I can't really acces the site on the go. But if I could, this would not only be good, but
really great! I obviously need an iPhone
Edit: Tried to buy a Niel Gaiman book, but ran into the 'cannot buy bec. of geographic location' problem... Bleh.