1. In week 2, Kaysar decided not to put up Chill Town based in large part on Will's threat that they would 'come after him' if he did. Kaysar's failure to handle that threat ultimately got him sent home.2. Kaysar's timid nominations reflect a pattern this year -- in most weeks, the HoH has made timid nominations because of threats, real, implied or imagined of revenge nominations by opposing alliances the next week. This is why Diane, Nakomis, Jase and Marcellus are no longer on prime time.
3. In season 6, Ivette gave up her best chance to win the prize based on Maggie and that group's threat to vote against her if she sent Maggie to the jury.
I could go on, but the use of threats, bribes, trade-offs, side deals and lying is so rampant it really should not be necessary.