To do business in modern America, one almost necessarily has to engage in interstate commerce. In a city like Jacksonville, with its proximity to the Florida-Georgia border, one can easily see how anything from the sale of an automobile, to the award of a subcontract, or the hiring of an employee, could involve potential litigants from different states. If a dispute arises out of such an interstate transaction and litigation is eminent, an important question is what is the appropriate forum to file the complaint?

http://jimersoncobb.com/blawg/2011/03/07/establishing-in-personam-jurisdiction-in-florida-over-out-of-state-defendant-corporations/