Docstoc is a web platform for you to upload and share your documents. Just like Flickr with photos upload and sharing.

There are many categories of documents you can find - legal, business, financial, technology, educational and creative.

You can download these documents for free. Many people are sharing their expertise like forms, charts and reports through the Docstoc interface.

With DocCash you can earn a some income from your documents too as they will integrate their Adsense ads with your own id.

I’m sure you can make use of DocStoc as a marketing tool for your products. You can always put a small link in the documents to your website.