ORLANDO, Fla. -- Shaquille O'Neal, the man with four rings, 28,596 career points and scores of nicknames, has finally decided to call it quits, ending one of the most colorful careers in NBA history that will surely culminate with a Hall of Fame induction.

O'Neal, 39, officially announced his retirement Wednesday using the new social media tool Tout, a real-time video messaging service to announce to fans: "We did it. Nineteen years baby. I want to thank you very much, that's why I'm telling you first, I'm about to retire. Love you, talk to you soon."

"Once a businesman, always a businessman," O'Neal said with a smile later on Wednesday. "I am the emperor of the social media network."

O'Neal said he wasn't prepared yet to reminisce about his long and prolific career, which produced three championships with the Lakers and one with the Heat. "Let's save that for the press conference on Friday," said O'Neal, who will hold that media event at his Isleworth home.