Evolution of Two-Sided Markets

Ravi Kumar

Yahoo! Research

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701 First Avenue

Sunnyvale, CA 94089.

ravikumar@yahooinc.

com

Yury Lifshits

Yahoo! Research

701 First Avenue

Sunnyvale, CA 94089.

lifshits@yahoo-inc.com

Andrew Tomkins

Google, Inc.

1600 Amphitheater Parkway

Mountain View, CA 94043.

atomkins@gmail.com

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