Yes PPT or any other document sharing so helpful to get seo. Use quality content with images to create PPT or other document like pdf. and your desing should be attractive. and target image and keyword in content to make links for your website.
Thanks noahwilson i also like to ask you one thing, can i use images in ppt which i found on google without any patent issues.? i mean can i use any image from google image search which related to my ppt, which doesn't contain any watermark.?