Hi-I am new here and new to the smartphone world. I have had my Eris for about 2 weeks. I use it to check email, facebook, to go online occasionally, and games. When I bought the phone, the Verizon salesman put ATK on my phone--said I needed it. I didn't question it, but I read so many opinions on the forum in regards to task killers--much of which I don't understand. Basically--what does it do? From what he told me at Verizon, it closes the programs I am no longer using. If I do get rid of it (please tell my in simple language why I should or shouldn't) how do I close the programs? Thanks in advance for being patient with me. As I said, I have entered an entirely new world with this phone!!