Some worry about portal disputes, decreased competition
Threewide report includes Cyberhomes, Google Base, Trulia, Zillow, among others
Search, listings display continues to evolve at Google Maps
Service syndicates listings to Facebook, MySpace, Twitter
Site claims 3.7 million listings, 8.8 million unique visitors
Tech execs debate best online real estate business model
Partnership follows similar deal with TV Web sites
Dedicated landing page aids house hunt
Study finds poor response to inquiries about other brokers' listings
While the industry has embraced listing syndication, there are still many hurdles to overcome, explains Threewide Corp.'s Celeste Starchild.