Only problem with the "Google killer" is that Google is the only existing search engine with a baseline of the web graph from the period before it paid so well to spam the search engines. So they are best situated to seperate wheet from chaff.
Shame to see you making money from the most unethical company ... who is the most unethical? Criticising anyone is too easy - criticising self is too tough! Powerset is in it's very early stage - though they are using the web 3.0, semantic technology. Time will say who is the winner!