Beatles or Stone? Which are better?

Recently I came across a great online tool called aMap which I think students can make good use of. aMap stands for argument map. It is based on informal logic, When you think about it, essentially we are use logic to argue and debate in everyday life. aMap started as a research project between a research organization and an economics foundation and has grown ever since.

To check it out and see how you can use it in a class or with a group, just go to the aMap website and link to 'Start an Argument'. Once there, you will need to set up a free account, but after that you are off and running. To 'start an argument', add the overarching question you're arguing about, and then state your position. A simple example is below:
Overarching question: Beatles or Stones?

Your position: The Beatles are way better than the Stones.

Once you have done this, post it to aMap and watch for the debate to begin.

Think about the times you need to come up with a thesis statement, decide which side of the issue you are on and then find evidence to support your argument. This seems like a great tool for starting an argument and then looking at the position others take on the topic. Try it out and let me know how it works for you. Did you find it a worthwhile tool?