As someone who recently moved to an apartment sight unseen (it worked out) and will be moving again soon under the same conditions, a decent rental site would be most welcome. CL doesn't cut it.
We've been working on this for quite some time and have hundreds of thousands of rental listings on our site (don't want to spam, if interested look at my profile). We're doing well, but it's still amazing how well craigslist dominates all the verticals it covers.