Lexis/Nexis source directory

Here's an interesting tip from Virtual Library Cat:
"LexisNexis has provided a new online tool to search its directory for a source before you even sign on to their service. "Source Locator" is a "powerful new tool for retrieving targeted information about the more than 36,000 LexisNexis sources". After your search you not only get a list of all sources that meet your criteria, but detailed information about each source."