Most search engines use user-provided key words to search for information in the internet. These are normally presented on your browser as formatted information which the user then reads. This all well and good as it stands, however, while the user is reading the text, the internet connection remains open. This can be a big financial burden to those people who use metered providers, which charge by the minute. Note that researchers that browse the internet for data usually end up copying displayed text into separate local files anyway.
At http://fileknow.com, they addressed this problem by providing the Rapidshare Search Engine. This also uses user-provided key words, however, it searches for actual file names that contain the given key words. Chances are, the resulting files found will contain the necessary information linked to the provided key word or words. Since it looks only at file names, rather than the actual contents of files, response time is very fast. The list display the actual file names with file size in kilobytes as well as date of creation or posting. The user then selects from the list of rapidshare search files to be downloaded. It even provides authentication codes for proper downloading of the required file.