"Carl Icahn to Clients: Take Your Money; I’m Done" (no word on the fate of his blog)

Mr. Icahn's blog, The Icahn Report, has not been updated since April 16, 2009.

From PE Hub:

Billionaire hedge fund manager Carl Icahn said he plans to return all of his clients’ money, becoming the latest in a string of investors who no longer want to manage money for outsiders.


“After careful consideration of all relevant factors, we have determined to return all fee-paying capital to investors,” the 75-year-old stock picker wrote in an investor letter. A copy of the letter was released in a regulatory filing Tuesday morning....MORE

A quick check shows that both Hugo Chavez and Fidel Castro are still blogging.
They are both "dot org" which I suppose is appropriate, while Mr I's site is/was a dot com.