The main faq page on this. Useful.
Can see overview of some features.
Email, bulk, url upload.
Slide transcripts.
No transitions supported. (downloadable file has it though)
easily create build photo slide shows of annotated images to create albums, presentations, tutorials, and galleries of annotated artworks. They can be published then on your site or burned on a CD.
SlideShare supports most popular blogging services such as Wordpress, Blogger, Movable Type etc.
" If you find it does not support a particular service, please let us know".
Upload and share your PowerPoint & Keynote presentations, Word & PDF documents and professional videos on SlideShare. Add audio to make a webinar. Capture leads with your presentations
freely downloadable(no permissions) streamed(hosted somewhere else) mp3 file. provide url.
SlideShare does not currently provide audio hosting. Future: might.