[BbzzbB]

It removes the extra weight to Twitter blue tweets?

[idle_zealot]

If the property names are to be believed it sets a weight multiplier to 0. So it prevents recommending them entirely.

[SketchySeaBeast]

It sets the default to zero, but apparently can range up to 100. So... what modifies it? (The answer is probably in there somewhere, but I'm sure someone will find it before I do.)