Credit:
Gmail's announcing that they've upgraded their web-based viewer to support PowerPoint and TIFF files. Even though you could view PointPoint files as slideshows before, today's update brings zooming, copy/paste, print to PDF, and no longer requires Flash. Sweet.
Credit:
In your Gmail inbox, you should already notice that now next to every TIFF and PPT file, there's a view or download option. Selecting the view option will open up the file in a new browser tab and offer thumbnail views, multiple slides per page, zoom, print to PDF, and an edit online link that takes you to Google Docs for online editing.