Most Important Portals and their Founders

Portal/ CompanyFounder
AlibabaJack Ma
AmazonJeffrey P. Bezos
BloggerEvan Willams
EbayPierre Omidyar
EmailShiva Ayyadurai
FacebookMark Zuckerberg
FreelancerMatt Barrie
GoogleLarry Page and Sergey Brin
Groupon Andrew Mason, Eric Lefkofsky and Brad Keywell
GtalkRichard Wah kan
  
HotmailSabeer Bhatia
InternetTim Berners Lee
LinkdinReid Hoffman, Allen Blue and Koonstantin Guericke
Mozilla FirefoxDave Hyatt and Blake Ross
MyspaceChris Dewolfe and Tom Anderson
NimbuzzMartin Smink and Evert Jaap Lugt
OLXAlec Oxenford and Fabrice Grinda
OperaJon Stephenson von Tetzchner and Geir lvarsoy
OrkutBuyukkokten
RediffmailAjit Balakrishnan
SkypeNiklas Zennstrom,JanusFriis and Reid Hoffman
TwitterJack Dorsey and Dick Costolo
Whats upLaurel Kirtz
WikipediaJimmy Wales
YahooDavid Filo and Jerry Yang
You tubeSteve Chen, Chad Hurley and JawedKarim