I admire the evolving technology of Google Custom Search Engines (CSEs). By guessing some clever terms and operator combinations, over time, we have been able to un-dig (for example) loads of contact lists of passive candidates within every industry we get sourcing requests in.
The best part of CSEs is that they make the web structured. In a sense, CSEs support searching parts of the web as if they were structured databases. You can search for values like the employer of a person. It is free, of course. (See some examples below.) This fact is still little-known, and we