Backlinks from document sharing websites

Has anyone had any success with backlinks from document sharing websites? I have come across a few that let you upload documents. These documents can include backlinks and everything. The content you put in these can be top notch for getting contextual backlinks and has very little moderation like some other parasite websites would have. These are the ones I have found.

Scribd
Slideshare
Issuu
Docstoc
esnips

IS there any benefit in creating some high quality documents to upload to these website with the intent of getting some backlinks?

Yes, it might give you some benefits. First of all, check if the links are do-follow or no-follow. And then check if the links don't have the noindex tag. If it doesn't have a tag, then they will get indexed.

Dont waste your time for links with such sites, But you can use them as parasites.