The neurointerventional bubble.

seem to indicate that most researchers are generally satisfied with results obtained from only one of these services. The term " deep Web " refers to high-quality Internet contents that are not immediately obvious without specific browsers. The contents of the deep Web are growing at a much faster pace than those of the surface Web. Brightplanet is a Website that " harvests, federates and normalizes regardless of source language, document encoding, format, or storage mechanism these data and provides qualified, relevant data for analysts, analytic technologies and data enrichment technologies. " 12 Unlike the information found in libraries, data from the deep Web are not indexed and not accessible by using popular search engines. If one uses only standard Web searches, most information contained in books, journal databases, and other scholarly materials will be missed. 8 Fortunately for many of us, larger academic medical libraries nowadays offer most of the content in digital formats accessible from our computers. The concept of a virtual library has received mixed attention. The WWW Virtual Library (http://vlib.org) is the oldest voluntarily supported catalog that contains sections ranging from law and medicine to less common topics such as Chinese and Japanese Art to Egyptology. ITT Technical Institute offers different degrees (including one on health information technology services), and because it has more than 100 campuses in the United States, it houses its library electronically (http:// itt-tech.edu). The states of Alabama and Kentucky host on-line libraries that contain basic books (including several encyclopedias) and magazine and journal collections that may interest the general public and help students (www.avl.lib.al. us and www.kyvl.org). Florida State University offers a mathematics only on-line library (www.math.fsu.edu/Science). The University of Pittsburgh began digitizing its collection in 1998 and their system now hosts 70 collections (www.library. pitt.edu). These are just some of the virtual library offerings that can be found on the Web. Libraries are no longer only for warehousing books but are becoming gathering places for the virtual community. It is obvious that the ways in which we access music, radio, cinema, and television have changed more in the last 10 years than in the last 100. A few days ago I told a radiology resident that I needed to go to the library and search the meaning of a word in a dictionary and she looked at me as if I lived in a different world. I guess she was …