Share your presentations online with Slideshare

Slideshare allows you to share your presentations (PowerPoint, Open-Office etc) online. I would write a detailed review about if I get a chance to see it, it’s in beta and requires invitation.
But it has been Techcrunched and some people have already used it. You can find more information on Slideshare blog.
FYI! Jonathan Boutelle (Jon) is behind this idea and his team at Uzanto consulting has done development. As far as UI is considered, I guess Rashmi Sinha and Jon must be involved.
I wish Jon and his team good luck and congratulate for good work.