I think the three people who are up for eviction are important to the show - all three have such a different personality and it will be a negative for the show no matter which of them goes - they will lose a valuable housemate either way.
Eileen is hilarious and quirky, adjoa is different and doesn't dance to anybody else's tune, and Sarah is lively and feisty. BB needs to add a few more to the mix and get rid of a less integral housemate. These are the worst three house mates to have up so early in the show. It will turn into BB bland-fest soon. I have a feeling that Sarah will go over the other two but really none of them should go for the sake of the show.
I think BB screwed up by letting them nominate face to face.