It may or may not solve a problem but it does tell you what it does: it helps you share ppt and powerpoint files.
You could have the document on your server. But believe it or not, several people do not have servers to host documents they may want to share publicly.
I think if you wanted to quickly share a ppt or pdf without much control over the document, then Doxela is much faster to achieve your goal. It's like what Scribd would be if they wanted to do a lite.scribd.com.
When it isn't, it's usually a document that I'm sharing with a couple people (I would email it).
I don't remember the last time that I needed to share a document publicly that I didn't just find online. Since this is such a rare occasion, I probably wouldn't remember this site and just use something more general like dropbox.
I don't really see much advantage of this over dropbox. Actually, I prefer my pdf reader over google's since the find feature works better.
Sorry. Maybe I'm not the target of your app though.
Oh, also, it didn't work for me using safari.
One more thing: The text you see after a file is deleted has a grammar mistake: "Your document succesfully deleted."
Wish you all the best with it!