Jigsaw is a good site to use to find passive job seekers. The site allows for buying and selling of electronic business cards.

They currently have over 6 million + business card entries in their system. There are both free and pay accounts. I originally signed up for a free account (where you have to put in 25 new contacts each month), but recently moved to a pay account. It’s not too hard to update 25 new contacts each month if you do a heavy amount of recruiting each month and have a good network at your disposal. I have used this site to recruit candidates in every industry and discipline, and it is pretty extensive. The majority of the Fortune 500 is represented here as well as a surprising amount of smaller “under the radar” companies. You may even already be in there - even if you never had a business card to hand out to someone in the past.

Here is a look at there search features:

I will post a video tutorial of this site in the next few days. There are many ways to use Jigsaw and I will outline them in detail. Stay tuned!