Legendary reference reviewer, Dr. Peter Jacso, takes an in-depth look at the Scitopia database. He writes:
Scitopia is a useful and free indexing/abstracting federated search service—especially in the various engineering and physics disciplinary areas—for discovering in one fell swoop journal articles and conference papers of 17 scientific societies; technical reports of some government agencies; and patents from three patent offices. It could be much better if it searched the full text of the documents of the allied partners, not just the metadata. The software has annoying problems with Boolean OR operators, exact phrase searching and author name searching, but Scitopia still can unearth relevant academic documents and increase the use of expensive journals and proceedings held by the library.
Source: Gale.com
