When it comes to crowdsourcing, one name comes to mind, Jigsaw. This is one of the largest databases,containing the most up-to-date contact and business information, in the world.. It includes over 30 million business contacts and over 40,000 contacts that are added and edited daily by its users. The information that is included is a phone number, the position, company name, mailing address, and business email address.
What makes this site even more intriguing is the fact that setting up an account is FREE. All you have to do is make an account and add company contact information and through doing so, you accumulate points. These points in turn give you access to other business contacts.
This is a great way for people to network within one area. Here is a video explaining more clearly how the site works.
