I handle listing data ingestion and distribution at HotPads.com, so I deal with some of these problems all the time. There hasn't been a single complete game c

I handle listing data ingestion and distribution at HotPads.com, so I deal with some of these problems all the time. There hasn't been a single complete game changer in this space yet, and with the way things are currently progessing I think the solution to the MLS problem will come as a combination of MLSes learning to play nice (we see quite a few distributing their data across multiple sites) and agents and brokers signing up with distribution services, listing their properties on more open sites, or handling their own distribution directly. We have listing feeds with examples of all of these cases.