Broadcast PowerPoint 2010 Slideshows
There are plenty of third-party applications out there that let you share your desktop with one or more other folks, but if you just want to quickly share a PowerPoint presentation, all you need is Office 2010.
Under the Slide Show tab in PowerPoint, the Broadcast Slide Show button lets you instantly create a unique URL that will display the presentation in real time as you move through it. You can then e-mail the URL to whoever you want to see the show. (Note, you can also get to Broadcast Slide Show from the new Backstage View.)
You need either SharePoint Foundation Services or a free Windows Live account ID to use the feature, but it's remarkably quick and easy, and it's all done from right in PowerPoint.
Viewers can't download the presentation, of course, and it's available only as long as you're in Broadcast mode. But they can view it full screen, and you can save the presentation as a video for later viewing.
Ultimately, just by virtue of being built into PowerPoint, Broadcast Slide Show is likely to find lots of uses for small and midsize companies looking to connect with remote employees, customers, prospects, and suppliers.