From Katie's post, you know we just finished up our Summer Tech Conference. I would have to echo Katie's sediments, it was wonderful. On our wiki this year, we decided to post our PowerPoint presentations. We also did this last year by saving the presentation as jpegs and uploading them to Picasa web albums. We could then embed them as a slideshow.
This year I decided to give SlideShare and Scribd a chance. Both sites allow you to upload PowerPoint files, along with PDF and some open office file formats. Scribd adds support for Word and Excel too. I uploaded my presentation ppt file to both sites. I used a non standard font and both sites changed my font to standard font, not what I wanted. Since both sites allow PDF uploads, I used CutePDF to save my presentation as a pdf file. I once again uploaded them to both sites. Slideshare worked perfectly, but Scribd never took my pdf.
Needless to say, I have become a fan of SlideShare. Even more so, when they featured my presentation on their homepage.