Blogrush is a polished version of the link exchange, 2:1 link exchange and other such banner exchange programs of the yesteryears, mostly popularized by the porn sites. It is even worse. Think about it. You get one head line impression of your blog in exchange for 5 head line impressions you show to your visitors. Only the big players win in this game and yes, you will get some traffic.
I am using BlogRush. Nothing fantastic yet but give it some time to see how they finetune the system.
I've gotten an average of 1 hit a day from BlogRush. They really need more specialized categories to make it worth while. Jay
Right now it is a total waste of time and place on the blog. I got 1 click from 2000 impressions. My titles aren't bad, you just won't see any real traffic from it. those few clicks a day really don't count and you should look at other ways to market your blog. So blogrush is not 1:1 exchange nor 1:5 exchange. Its 2000:1 exchange.