Here are the 20 most popular real estate websites as ranked by Hitwise, which tracks the number of visitors each site gets based on a sample of 10 million Internet users.

realtor.com
realtytrac.com
homegain.com
rent.com
remax.com
realestate.yahoo.com
zillow.com
apartments.com
ziprealty.com
move.com
century21.com
homes.com
servicemagic.com
forrent.com
hud.gov
housevalues.com
realestate.msn.com
coldwellbanker.com
apartmentguide.com
foreclosurestore.com

Realtor.com, the official site of the National Association of Realtors, is far and away No. 1, with 8.8% market share vs. 3.7% for second-place realtytrac.com.

Somehow Hot Property didn't crack the Top 20. That's OK. Our audience is small but elite. Right, guys?

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