280 Slides is a brilliant technological feat and I would never be bold enough to attempt something like Objective J, but I have to say, I don't see the point of 280 Slides and Google Presentation. Perhaps it's because I'm a PowerPoint fan boy, but why would anyone use 280 Slides instead of PowerPoint or Keynote?

I can only see 3 reasons why you would:

- Cost, though most people pirate PPT/Keynote anyway and big companies can afford it.

- For people who don't use Mac or Windows or who switch to random computers a lot.

- Multi-user editing at the same time on the same presentation.

That seems to be a real minority of users though, and for just about every other reason, PowerPoint and Keynote trouce these web-based implementations. Even basic presentations are faster and easier to make and look nicer in a native app. For power users, it's no contest.

Is there something I'm not getting?