The most famous single-letter domain owner is without a doubt Elon Musk, whose company X.com eventually became PayPal . Unfortunately, when Musk was pushed out , the domain (with its aught-tastic logo, above) stayed behind with PayPal. However, the SpaceX and Tesla CEO has bought it back for an unknown sum, according to Domain Investing and a tweet by Musk. Nobody’s saying how much he paid, but as a term of reference, Z.com sold for around $6.8 million three years ago. Whatever the price, the transaction seems to have been done on friendly terms. Musk’s tweet says “Thanks PayPal for allowing me to buy back X.com! No plans right now, but it has great sentimental value to me.” I’d be sentimental too — the $165 million he earned from PayPal, though it seems quaint nowadays, helped him launch SpaceX and Tesla, companies now valued at around $15 billion and $50 billion, respectively. Thanks PayPal for allowing me to buy back https://t.co/bOUOejO16Y ! No plans right now, but it has great sentimental value to me. — Elon Musk (@elonmusk) July 11, 2017 X.com has been inactive, but Domain Investing noticed that the Whois had switched from PayPal to “private, ” and the domain moved from MarkMonitor to GoDaddy. After the site reached out to PayPal, it eventually replied that “we are delighted to sell the domain X.com back to its previous owner, Elon Musk.” The purchase price could come up in an SEC filing if it’s in the high seven or even eight figures, since both PayPal and Tesla are public companies. As for what Musk will do with it, he’s not saying, but this is a guy who dreams up things like Hyperloop in his spare time, so expect something from beyond left field . Source: Domain Investing , Elon Musk (Twitter) 
Read the article:
Elon Musk buys his old X.com domain from PayPal
 Living off dividends is the dream for many investors. If you have enough saved and properly invested, you can take home a comfortable salary without working at all. This calculator will help estimate how much you’ll need to accomplish this goal. Read more… 
			
 The U.S. Army Research Office has just thrown some money the way of 4D printing —but what, exactly, is all the fuss about? This beautiful video goes a long way to showing us why the technology is so exciting. Read more…         
 Apple’s recalling certain MacBook Air models over flash drive failure. If you purchased one between June 2012 and June 2013, a firmware update will see if your 64GB or 128GB drive needs replacing. [ Apple via GigaOM ] Read more…