To enable extended metasearches, and thus to emphasize the big asset of metasearching (which is covering the widest possible range of information sources in the course of carrying out a single search) the number of resources searchable simultaneously via vLib has been increased significantly.

This enables creating overall search interfaces such as, for example, a search across all MPG Library Catalogs available at

http://vlib.mpg.de/start?module=metasearch&stype=locate&type=MPG%20Library%20Catalog

which may be useful to locate a needle in a haystack.

Of course, users will be deciding whether the usability of huge metasearch interfaces is acceptable. Hence we are curious to have some feedback.