Co-founders Rich Barton, Lloyd Frink will continue active roles
Partnership grows Zillow's rental listings
Mobile tools by Facebook, Realtor.com among standouts
From The Real Deal
Home values may hit bottom in last half of 2010, says Zillow
RE/MAX takes back No. 10 spot in July
Real estate websites may have different audiences
Developers tap into device's screen size
ZipRealty, Trulia score poorly on reliability
The world is an increasingly mobile place
Product manager details search engine giant's latest intiatives
HUD.gov, HomeAway.com rejoin list, too
Zillow to manage for-sale listings
MSN Real Estate, Trulia also move up on Hitwise list
Supply overhang will prolong slump, say economists