Jigsaw. Heard of it yet? I like to call it my "little black book," but it's hardly small. With a dedicated user base of over 1 million, Jigsaw now has over 22 million business contacts. It currently adds about 36,000 contacts per day and is overwhelmingly the cleanest contact data set out there. Founded on a belief that professional salespeople would be willing to give in order to get, they have found a magic formula that has become so compelling that salesforce.com bo […]