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This sure can, the best way to do this is to visit http://www.skydrive.com
oh skydrive..going tothe link now
This is Microsoft's cloud server for Office and allows you to view and even edit your powerpoint documents on the internet
You can share your documents with anyone else via an email invitation
do they need to download skydrive too
no you can send them a link that they can go to directly
It's actually a website
(there's also an App in Windows 8 and on the mobile phones by the same name)
But in reality it's a website that they can just browse to
Once you are logged in to your Microsoft account on Skydrive, upload your powerpoint document to your files (there is an upload button on the toolbar with an upwards pointing arrow)
Once uploaded click on the file and it will actually open up in a web based powerpoint
Note there will be a "SHARE" option
Click that and you can send an email to your friend and even allow them to edit if you want
Login is optional
Let me know if that helps!
If it does please take a moment to rate our interaction to close this question.
If you have further questions, please feel free to ask them below and I will gladly continue to assist you!
Dan, can we callaborate on the document we are sharing