[AragornsHeir]

I agree with Rosie,
Was Gollum not some sort of Hobbit? He was yet he was full of mischief. And when he got hold of him he used it for evil. Pippin was quite mischievous and he wanted the Palantier so badly after he had touched it. It had already influenced his mind. And even though Pippin was related to the Bagginses. His mischief led his influence. I think it is the ring, if you will, that is more like the Devil. It is more prone to influence those that are more prone to do bad (like Pippin) or have the power to do so, than those that are more prone to do good (like Frodo).