I likee AuthorStream

Of course, I’m never quite satisfied with any presentation I create, so I was tweaking the slides all the way up to the very minute I began presenting. After a recent presentation, plenty of people asked if I was going to be posting a copy of the presentation online. Normally, I’d use Slideshare to do so, but these presentations made ample use of Powerpoints custom animations. If you don’t over do it, those animations can be great for calling attention to particular details in a slide. Unfortunately, Slideshare doesn’t support those animations at all.
So, after a little searching around I stumbled upon AuthorStream. It supports those animations and handles them rather well. It also supports narratives, like Slideshare does. You can embed presentations, watch them full screen, email them, comment on them all the usually goodies you’d expect. Oh yeah, there’s one more distinct advantage of AuthorStream tho… It has an application that you can download that will convert your powerpoints en masse to flash and then allow you to import them into the AuthorStream website or into WizIQ. So you can embed it into your site, link to a really nifty full window player, or just direct people to their site. And since you can save them offline, no worries about the site disappearing or anything.