Been playing. There is a lot in the way of new released at present, what with wolframalpha.com that has launched recently. I think there is plenty of scope for alternative engines. After all google works on the PR algorithm that we all work so had to manipulate...but is not necessarily the most productive at finding results.
So I welcome new s/w that aims to help us go about our lives more easily and more be more productive. Quite impressed with WA as well for its great ability to compute - thats really come in handy for me on numerous fronts. So I welcome more competition because its good for us and ultimately good for the domain business!