Sue Me, I'm Lazy

Wikipedia is blessedly clear and concise on the differences between general and specific jurisdiction.

I’m taking the easy way out and just quoting the wiki…

General jurisdiction exists when an out-of-state party has extensive, systematic and continuous dealings with the state in which the court sits. When a court has general jurisdiction over a party, the court has personal jurisdiction over any dispute involving the party. Thus, a court's general jurisdiction power is equivalent to its power based on presence within the state. As an example, a corporation may advertise and sell so many products for such a long time within a state that it is subject to personal jurisdiction for any claim against it, even if the claim involves activity that occurred only outside the state… Conversely, a court's specific jurisdiction power over a party, when the party does not have systematic and continuous contacts with the state, is specific to cases that have a substantial connection to the party's in-state activity.