cool. I was thinking about setting up a hosted lucene thing after watching my friend trying to get solr to do 'did you mean searches' - of course I didn't do it so kudos to you!
The thing is, you're going to have to be very clear about QOS, future pricing, vendor lockin etc. before you can get people with established businesses to sign up to it.
Yes, the pricing and QOS commitments are set and we'll publish them very soon. BTW, we have been working with Lucene/Solr for several years and built IndexTank because our clients asked us for a number of things that Lucene cannot do or doesn't do well. Feedback from people like you is absolutely welcome!
The thing is, you're going to have to be very clear about QOS, future pricing, vendor lockin etc. before you can get people with established businesses to sign up to it.