Share a Presentation via SkyDrive
Anyone using Microsoft’s SkyDrive cloud-storage service can upload PowerPoint presentations to the cloud for sharing (with everyone, via the Public folder, or only with those people you have invited). Choose File > Save & Send > Save to Web. As with PowerPoint’s Broadcast feature, you need a Windows Live account to take advantage of this feature.
You'll see a display of the folders on your SkyDrive. Click Public if you want to share the presentation with everyone. If you want to share it with a limited number of people, select a shared folder or add one by clicking New. Back in PowerPoint, click Refresh, select the desired folder, and then choose Save As to save the file there.
Once the file has uploaded to your SkyDrive account, log in to your SkyDrive folder, click the presentation, and click Share. Now you can decide whether to send an email message containing a link to the presentation, to post the link to your Facebook or Twitter account, or to obtain a link that you can send to someone via other means.
Embed a Presentation in a Web Page Using Google Docs
At times you may want to publish a presentation that anyone can access, perhaps by embedding it in your website. One way to do this is to upload the presentation to your Google Docs account and publish it to the Web from there.
You need a Google Docs account, of course. Save your PowerPoint presentation as usual, and then sign in to your Google Docs account and click the Upload button (you’ll find it represented by an icon on the left side of the page, to the right of the Create button). Choose Files from the pop-out menu, locate your presentation, and upload it. Google Docs will automatically convert the file to its native format. Once the presentation is in Google Docs, open the file in Google Presentations, click the Share button (in the upper-right corner of the interface), and set the visibility options and access levels as you like.
Google Docs offers three visibility options: 'Public on the Web' means that anyone can see the presentation, 'Anyone with the Link' means that only those with whom you’ve shared the link can see the presentation, and 'Private' means that only you have access to the file. You get four Access levels, too, ranging from Commenters (who can view, comment on, download, and copy the presentation, but can’t delete it or change its sharing settings) to Owners (who have complete control over the presentation).
Deliver Presentations to iPad Users
No iPad version of PowerPoint exists currently, but you do have a way to share your PowerPoint presentations with iPad users. Sign up for a free account with SlideShark, and upload your presentation. Your iPad-using audience will need to download and install the free SlideShark app before they open the presentation. SlideShark can also share your PowerPoint presentations via Facebook, LinkedIn, Twitter, or email.