XPogo (the world's largest online pogo comunity, tons of videos, pictures... just simply the best site out there)
The Pogo Spot (the guys from PA)
Flybar (the best stick on the market, can get over 6 feet of air)
Vurtego (another stick built for huge air, release date is uncertain)
SBI Enterprise (web site of the largest pogo producing company)
Palatine Pogo Crew (hosting pogopalooza '05 in august)
Dan Brown's Site (host of pogopalooza '04)
MotoStik (new stick comming out, designed with the look of a motox bike)