The more content on the web the happier Google gets. Google offers free storage space for any one to upload files. The service is started on the 15th of november 2005 and is called Google Base. And you don't need to set up a website, just upload files, documents etc. and tag them. All this stuff needs to indexed and will eventually be searched.
Google base is yet another extension of the existing content collection efforts like web crawl, Google Sitemaps, Google Print and Google Video. Google Base enables content owners to easily make their information searchable online. Anyone, from large companies to website owners and individuals, can use it to submit their content in the form of data items. We'll host the items and make them searchable for free.
Google explains "Google Base is a place where you can easily submit all types of online and offline content that we'll host and make searchable online. You can describe any item you post with attributes, which will help people find it when they search Google Base. In fact, based on the relevance of your items, they may also be included in the main Google search index and other Google products like Froogle, Google Base and Google Local.