Short answers, pulled from the story.
The Playoff Bowl, officially called the Bert Bell Benefit Bowl, was a post-season game for third place in the National Football League, played ten times at the Orange Bowl in Miami, Florida. It matched the second-place teams from the NFL's Eastern and Western conferences and raised a reported million dollars over the 1960s for the league's player pension plan.
Lombardi called it "the 'Shit Bowl'...a losers' bowl for losers" and described the game as "a hinky-dink football game, held in a hinky-dink town, played by hinky-dink players." He coached in it following the 1963 and 1964 seasons, and his Packers' loss to the St. Louis Cardinals on the 3rd of January 1965 deepened his contempt.
All-Pro defensive tackle Roger Brown appeared in five Playoff Bowls, the most by any player. He played for the Detroit Lions in 1960, 1961, and 1962, and for the Los Angeles Rams in 1967 and 1969, winning all five times.
The 1966 season Playoff Bowl game, played on the 8th of January 1967, marked the debut of the "slingshot" or "tuning fork" single-curved-support goalpost in American football. The NFL adopted this design for the 1967 season, and it remains in use in the NFL, CFL, and most colleges and high schools.
The final Playoff Bowl was played on the 3rd of January 1970, with the Los Angeles Rams defeating the Dallas Cowboys 31-0. The game drew 31,151 fans. The bowl was discontinued when the AFL-NFL merger was completed for the 1970 season.
The ten Playoff Bowls were official third-place playoff games at the time they were played, but the NFL today considers them exhibitions. The games ran from 1961 through 1970, all at the Orange Bowl in Miami, Florida.