Some billionaires like to blog and write articles on their official sites. Here is list of multi-billionaires sites or blogs:

IcahnReport.com - Carl Icahn, multi-billionaire hedge fund manager, writes about corporate abuses in America.

GeorgeSoros.com - George Soros, multi-billionaire hedge fund manager, writes regularly on his official site.

PickensPlan.com - T. Boone Pickens, multi-billionaire hedge fund manager focusing on energy, shares his thoughts and energy plan on his official site.

PerotCharts.com - Ross Perot, founder of EDS and multi-billionaire, writes about federal deficit, for now.

Berkshire Hathaway Annual Shareholders Letters - Warren Buffett, CEO of Berkshire Hathaway and the richest man on the planet in 2008 (according to Forbes) does not blog but writes excellent annual letters.

Yahoo Corporate Blog - Jerry Yang, Yahoo's CEO & Chief Yahoo and multi-billionaire, often writes here.

BlogMaverick.com - Mark Cuban, multi-billionaire owner of Dallas Maverick, has been writing regularly on BlogMaverick.com since 2004 on various subjects.

Pmo.vox.com - Pierre Omidyar, founder of eBay and multi-billionaire, has a blog and Twitter feed here.

The Trump Blog - Donald Trump, multi-billionaire owner of Trump Hotel & Casino and real-estate mogul, writes regularly at his Trump University blog.