The formatting is messed up in my browser, FF3: the star usually appears above the gig, sometimes to the left. Horizontal lines often run through the middle of the text.
I assume that clicking the star indicates your preference for that gig and similar. There are no instructions that I see. Can I unclick a star? I may have misclicked.
There should be some indication that the large box in the middle of the page is loading something when you first go there. I thought maybe it was a plugin that hadn't loaded, and while scrolling to the bottom, it got populated (surprise!).
I'm thinking to announce it to HN in a week or so but some early feedback here would also be appreciated.
Let me know what you think, it uses a Bayesian classifier to predict what gigs you'll like, and it's my first ajaxy web app.