Given a document, generate a short title of the document. The title should convey the main idea/event/topic about which the document is being written. Note that URLs in the text have been replaced with [Link].

Input: Consider Input: Co-Founder and CEO of Vivaldi  Jon Von Tetzchner  poses for a photo during the Web Summit  Europe's biggest tech conference  in Lisbon  Portugal  November 9  2017. REUTERS/Pedro Nunes
Co-Founder and CEO of Vivaldi  Jon Von Tetzchner  talks with a Reuters reporter during the Web Summit  Europe's biggest tech conference  in Lisbon  Portugal  November 9  2017.  REUTERS/Pedro Nunes
  He  has since launched Vivaldi  which includes functions  he  says bigger browsers lack. Vivaldi.net does not track searches and is based on an online community of users who recommend features   he  said.
Co-Founder and CEO of Vivaldi  Jon Von Tetzchner  talks with a Reuters reporter during the Web Summit  Europe's biggest tech conference  in Lisbon  Portugal  November 9  2017.  REUTERS/Pedro Nunes
Google (GOOGL.O)  dominates the online advertisement market and  it  closed Vivaldiâs advertising account. Google partnered Opera before launching the Chrome browser in 2008.
 He  said  he  was increasingly concerned about data collection and tracking by tech giants like Google and Facebook.

Output: Founder of web browser Opera says worried about online privacy


Input: Consider Input: Warren Buffett's  plans to eventually pass the reins of Berkshire Hathaway to a successor took has taken a major new step. On Tuesday   Buffett  laid out why Greg Abel  CEO of Berkshire Hathaway  and Ajit Jain  head of its insurance operations  will join Charlie Munger as vice chairman of the $500 billion conglomerate.
Jain  by contrast  oversees Berkshire's gigantic insurance outfit  where he's shown deft underwriting skill and the discipline to trim exposures to overly competitive markets like catastrophic insurance and reinsurance when pricing is unfavorable. A native of India  Jain came to the U.S. to get an MBA at Harvard and then cut his teeth at consultancy McKinsey. In 1985  he was hired by  Buffett  to work in Berkshire's insurance operations. Said  Buffett  in a 2009 shareholder letter  "I immediately knew we had found a superstar." A decade later  the division was bolstered by  Buffett 's acquisition of the Geico shares Berkshire didn't already own. From an insurance float of $3.6 billion in 1995  Berkshire's float now stands at about $100 billion annually.
In addition to Abel and Jain  Berkshire's investing business also has two rising figures.  Buffett  is increasing  his  allocations of Berkshire funds to lieutenants Todd Combs and Ted Weschler  who each manage over $10 billion  and have led the conglomerate to positions ranging from Apple to Charter Communications.
As succession plans harden   Buffett  and Munger will continue in their existing positions. That means they will continue to be overseeing major capital allocation decisions and investment activities  for instance any major deals. In addition to making headlines for Berkshire's succession plans   Buffett  also made headlines for  his  views on the wider investing landscape.
Most notably   Buffett  said tax reform will have a big impact on Berkshire's owners  telling CNBC's Quick that shareholders effectively have seen their ownership of  the company 's profits rise by over 20% as corporate rates have fallen from 35% to 21%.
About crypto currencies   Buffett  said today's euphoria inevitably will lead to heart break. "If I could buy a five year put on any of the crypto currencies I would do it "  Buffett  said  admitting  he  would never short the speculative asset because it's not something  he  knows well.  He  dished out the following common sense  "why in the world should I take a short position in something I don't know anything about."
But  his  views are crystal clear. "I think what's going on definitely will come to a bad ending "  Buffett  said.
Warren Buffett: My Greatest Investing Advice And The Investments Everyone Should Make

Output: Berkshire Hathaway Names Abel And Jain As Vice Chairmen As Buffett Succession Plans Sharpen


Input: Consider Input: Rob Gronkowski  is giving retirement some serious thought  apparently. (Bill Wippert/Associated Press)
 New England Patriots  tight  end Rob Gronkowski  raised some eyebrows after  his team âs Super Bowl loss to the Philadelphia Eagles on Feb. 4 by saying âIâm definitely going to look at my future  for sure â an apparent indication that  he  was mulling retirement after eight NFL seasons. But considering an injury history that stretches back to  his  time at Arizona  Gronkowskiâs comments probably shouldnât be all that surprising.
â  He  missed  his  entire junior season in college after having surgery to repair a bulging disk in  his  back.
â In January 2012   he  sprained  his  ankle in the AFC championship game against the Ravens  and had only two catches in New Englandâs second Super Bowl loss to the Giants.
â The next season â  his  third in the NFL â  he  broke  his  forearm while blocking on an extra point and missed five games.  He  then broke the same forearm in a postseason win over the Texans and missed New Englandâs next game  a loss to the Ravens.
â  He  played in only seven games in 2013  missing the first six after offseason surgery to repair a fractured vertebra and then the final three after tearing the anterior cruciate and medial collateral ligaments in  his  right knee and suffering a concussion on one play in a Dec. 8 game against the Browns.
â In 2015   he  missed one game after taking a hit to the knee against the Broncos.
â This past season   he  suffered a concussion in the AFC championship game and likely was not 100 percent for the Super Bowl.


Output: Patriotsâ Rob Gronkowski reportedly was considering retirement before Super Bowl