It's all about strategy, which is why I come onto this site. It's a challenge everytime- minigames aren't challenging after you become good at them, but its harder to become a master strategist! That's why its fun :)
Just to clear things up.
There are four mentors:
Rachel BB12/13
Janelle BB6/7
Mike Boogie BB2/7
Dan BB10
Each one will mentor a few houseguests each- when all the person's houseguests are evicted, that mentor will also be evicted.
I got this information from a person named missyae, who posts spoilers about Big Brother and Survivor and is always accurate. He does this by bribing and talking around to find information from people.
Proof that this is true: Somebody else has been using Janelle's Twitter, Rachel has pretended she is going away on vacation and Dan's blog is being written in a completely different style. I think we all know the truth now. If anyone wants to know more details PM me.
