In reply to:
There are many copyright protected books available in this hosts.Can i place the link to such a file ? (for example http://rapidshare.de/files/20307533/**********.rar)
Is there any problem by placing this link ?
It depends on whether you consider possibly having your Dreamhost account terminated to be a "problem".
While Google is *full* of references that talk about the "grey" area of linking to illegal content, as well as links to IP lawyers you can pay to argue your side of the issue if you get sued, the Dreamhost Abuse Center is very clear about this issue as it relates to your DreamHost account:
In reply to:
Note that we also prohibit the facilitation of copyright infringement. This means that linking to pirated files (even those located on non-DreamHost servers), operating BitTorrent trackers that primarily feature illegal material, the operation of 'warez' forums, etc. are prohibited.
Obviously, there is some subjectivity to these matters, and it is very easy to accidentally facilitate copyright infringement even if this is not intended. For that reason, we do take a reasonable approach when deciding what constitutes contributory copyright infringement. For example, embedding one or two YouTube videos on your site is a very different matter than running a site whose main purpose is to index and link to downloads of commercial Hollywood movies.
Term: Distribution
For the purposes of our policies, 'distribution' entails either distributing material directly from your account (ie. sharing files from your web space or via FTP) or embedding material located on non-DreamHost servers so that it displays within your server. It also includes willfully facilitating copyright infringement by linking to known infringing works, as described above.
--rlparker