Boosterism is a 10 letter English word. It's valid Words with friends word worth 16 points.
You can make 660 anagrams from letters in boosterism (beimoorsst).
First recorded in 1910-15; booster + -ism
But Kaku has made a second career out of this kind of boosterism, and it would be silly to expect anything different from him.
A largely positive review will avoid the appearance of boosterism by lodging a minor complaint or two.