theodp writes "Far from a PowerPoint killer, Slate's Paul Boutin finds Google's online presentation tool Preso more like a PowerPoint commercial — a half-baked app that shows how powerful Microsoft's program really is. But if you have your druthers, Boutin suggests ditching both and opting for Apple's Keynote, which helped snag an Oscar for Al Gore and inspired this Dear-PPT-Letter. 'The first hurdle ... You can't use it on a plane. Google Preso only works if you've got a live, high-bandwidth Internet connection. You can save the finished product to an HTML presentation on your laptop, but you can't edit the saved version or upload it back. The Splunkers would need to finalize their presos early in the morning in a rented conference room, where both Wi-Fi and Verizon wireless cards have been known to fail. That would kill the presentation.'"