Hey, I'm going to London for about 22 days near the end of this summer and taking a class at the London School of Economics (just their summer program). I was wondering what the best option would be for cell phone service once I'm there. If possible, I would like to be able to communicate regularly with my parents (who live in the U.S.), with friends over in the states, as well as people who I meet during the summer in the U.K. Is there any kind of plan or option I have to be able to do this without being absolutely crushed by ATT's international cell phone usage charges? BTW, I don't need any kind of fancy phone. Thanks a lot!