Using SlideShare, people can share presentations and documents with members of their Facebook network, embed YouTube videos into presentations and add audio to create a webinar. SlideShare account-holders can import existing presentations into Facebook or LinkedIn, and they automatically will show up on SlideShare.net and the two social networking sites. The application supports all formats -- including ppt, pps, pptx, odp, pdf, doc, docx, odt, Keynote and iWork pages, according to the developer. SlideShare, which has almost 400,000 monthly users, offers a free, personal account; a professional version for $14 a month; a business edition for $36 a month, and an enterprise version for $249 per month. Paid versions have no ads, deliver analytics and buzz tracking, and capture leads.