A portal helps to browse on a particular subject, hence the subject of a portal should be broad so that it presents a diversified content. The portal subject area should have enough interest and articles to sustain a portal, including enough quality content articles above a Start-class to sustain the featured content section.

Portal/ Company Founder
Alibaba Jack Ma
Amazon Jeffrey P. Bezos
Blogger Evan Willams
Ebay Pierre Omidyar
Email Shiva Ayyadurai
Facebook Mark Zuckerberg
Freelancer Matt Barrie
Google Larry Page and Sergey Brin
Groupon  Andrew Mason, Eric Lefkofsky and Brad Keywell
Gtalk Richard Wah kan
Hotmail Sabeer Bhatia
Internet Tim Berners Lee
Linkdin Reid Hoffman, Allen Blue and Koonstantin Guericke
Mozilla Firefox Dave Hyatt and Blake Ross
Myspace Chris Dewolfe and Tom Anderson
Nimbuzz Martin Smink and Evert Jaap Lugt
OLX Alec Oxenford and Fabrice Grinda
Opera Jon Stephenson von Tetzchner and Geir lvarsoy
Orkut Buyukkokten
Rediffmail Ajit Balakrishnan
Skype Niklas Zennstrom,JanusFriis and Reid Hoffman
Twitter Jack Dorsey and Dick Costolo
Whats up Laurel Kirtz
Wikipedia Jimmy Wales
Yahoo David Filo and Jerry Yang
You tube Steve Chen, Chad Hurley and JawedKarim