In 1995 he started IAC and bought the Home Shopping Network two years later.
And parent IAC could get distracted by its plan to separate into five publicly traded companies.
That fourth circle is, essentially, Crowded Room, a new app that IAC unveiled this week.
His plan to spin out IAC into five companies could prove lucrative for them.
Other consumer discretionary names in rally mode this past week include IAC ( IACI), home of Match.com.
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Diller was also asked about the legal challenge to Aereo, the new over-the-internet TV service IAC is backing.
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RushmoreDrive will be part of the new, smaller IAC, while larger, more mature businesses, including Ticketmaster and LendingTree, will be spun off.
The upcoming sale of the company had some major customers nervous as IAC had subsidiaries that competed with them.
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Starting today, premium users of the IAC-owned dating service can pay for their subscriptions with the untraceable peer-to-peer digital currency.
For the recent decade, an IAC shareholder would have lost 18% of his money, including the value of the spinoffs.
He served as the IAC Natural Resources Director beginning in 1991, and as the IAC Director of Programs since 1999.
Billoniare investor Barry Diller heads and is the controlling shareholder of IAC, and who is currently the Board Chairman of Expedia.
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It hardly needs to be said that Ennis, a media executive who has held high-level jobs at IAC and News Corp.
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Diller was asked by an audience member if he thought Grouspawn.com was a Match.com killer (the huge dating site which IAC owns).
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Inscription on the Register is determined by the International Advisory Committee (IAC), a body of 14 leading specialists appointed by the Director-General.
To its credit, the IAC review, headed by former Princeton University president Harold Shapiro, takes a serious stab at addressing these problems.
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The Audi A7 looked svelte at the Frank-Gehry design IAC headquarters building.
It was eventually sold to IAC and became a stand-alone public company.
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Ms. Ingle learned that InterActiveCorp (IAC) was to purchase Trip Advisor.
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The company was born out of Hatch Labs, a mobile incubator backed by IAC and Xtreme Labs, that closed in January.
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Subsequently, IAC leaders meet a few ministers as well as opposition leaders to plead their case, but no concrete action is taken by anyone.
Barry Diller is the Chairman and Chief Executive Officer of IAC, an Internet company whose properties include Ask.com, Match.com, Citysearch, Evite, The Daily Beast and Vimeo.
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Below, in summary, are the points he actually made on the IAC earnings call when he was reporting the tremendous results of the company this quarter.
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Most of them are for dating a subject IAC knows something about, as the owner of Match, OK Cupid and a bevy of hyper-targeted singles sites.
The revamped IAC will focus on media, advertising and entertainment.
The close relationship between Diller and Malone reportedly began to sour after IAC's stock price stalled in 2003, with the two disagreeing over deal structuring and financial issues.
Another quality IAC likes in acquisition targets is cash flow.
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IAC's travel side and boss of Expedia, the biggest internet travel agent, thinks online travel bookings in America could quickly move from 20% of the market to more than half.
Vimeo, owned by public company IAC, is an online video portal like YouTube with user-generated content, but unlike the Google-owned website, focuses on creative and original content, and high-definition video.
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Then this November, Diller proposed splitting IAC into five parts that would use a single-tiered voting structure, thus reducing Liberty Media's hold on the company by almost half to 30%.
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