What file formats does SlideShare support? What is the maximum allowed file size?
Presentations: PDF, ppt, pps, pptx, ppsx, pot, potx (Powerpoint); odp (OpenOffice); key, zip (Apple Keynote).
Documents: PDF, doc, docx, rtf (MSOffice); odt, ods (OpenOffice); Apple iWork Pages, txt, csv
-------------- you can link your slideshare with your linkedin:
If you have a SlideShare.net account, you can import your existing presentations into LinkedIn. If you don’t have one, signup from LinkedIn to share your presentations worldwide and get more views/traffic.
SlideShare is present on both Linkedin and Facebook. Sync both these accounts with SlideShare and you have a holy triad. Upload to any one — SlideShare, Facebook or LinkedIn and it will shows up instantly on all three.