I'd say 2.5 per unique is bad since I want to send them to my sponsor from the first page they see when they visit my site
No serious, I'm curious myself about how many unique visitors that come to your index page say to themselves: "Well this is a site I want to visit, let's search for that ENTER" link". I myself click away 50% of the time on the first page because the site doesn't look like it has the thing I was looking for.