WebAppRater

This site provides the service of effective PDF Search Engine and viewer. It is one of the tools that every one can employ and enjoy the facility. The user has to type the name of the book or document that you are keen on getting for the results to be displayed effectively. It is possible [...]

It is a free search engine that provides an option to search for and download various PDF&DOC documents, data sheets etc. They don’t host any files. The crawlers harvested a huge database PDF&DOC files through different open Internet resources such as blogs, forums, BBS and others. This database is regularly checked for file validity so [...]

The concept is so simple that you can launch a website which could host top interesting topics subject to any matter instead of concentrating on only one subject. By this you can get many people from several communities.