By Alexei Oreskovic

SAN FRANCISCO (Reuters) - Google Inc shares set an all-time high on Monday, with the Web giant's reliable advertising business back in vogue among Wall Street investors disenchanted with younger social media companies.

The stock reached $747.84 around noon eastern time (1600 GMT), inching past a previous all-time high set in November 2007 of $747.24. The shares traded below $300 in 2009 during the global economic crisis and remained under pressure in the ensuing years as investors worried that Google's best years were behind it.

Now, the world's No.1 search engine, which generated $38 billion in revenue last year, looks increasingly attractive compared with a new crop of social Web companies, analysts say.

Facebook Inc, as well as once-hot companies Zynga Inc and Groupon Inc, came to the public markets amid sky-high expectations during the past year, but have fallen out of favor on concerns about their future business prospects.

"The markets have to come to appreciate that Google's been making money hand over fist all this time," said Brian Wieser, an analyst at Pivotal Research Group.

Google's lucrative search advertising business, as well as its efforts expanding into display and mobile advertising, have helped the company maintain robust revenue growth.

By contrast, Wieser said, Facebook has much more uncertainty. "It's so new that there's a lack of data points for anyone to point to."

(Reporting By Alexei Oreskovic and Gerry Shih; Editing by Tim Dobbyn)

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  • #6 - ITA Software ($700 million)

    <strong>What people said...</strong> <a href="" target="_hplink">Henry Harteveldt</a>, analyst at Forrester Research: "Google's mission is to organize the world's information, and ITA does that for travel" <a href="" target="_hplink">Edward Hasbrouck</a>, author and policy analyst for Consumer Travel Alliance: "Google's purchase of ITA Software is likely to be a bad thing for travelers." <strong>Acquired: 2010</strong> <em>Source: <a href="" target="_hplink">Google Blog</a></em>

  • #5 - AdMob ($750 million)

    <strong>What people said...</strong> <a href="" target="_hplink">Neil Strother</a>, analyst at Forrester Research: "The deal shows that Google is serious about becoming a major player in the mobile advertising ecosystem" <a href="" target="_hplink">Marc Rotenberg</a>, executive director of the Electronic Privacy Information Center: "We've reached a point in Google's evolution in which Washington agencies and Congressional committees need to look more closely at the company's dominance of Internet services" <strong>Acquired: 2010</strong> <em>Source: <a href="" target="_hplink">Google Blog</a></em>

  • #4 - Waze ($1.1 Billion)

    Google <a href="" target="_hplink">bought mapping startup Waze</a> for $1.1 billion on June 11, 2013, AllThingsD reports.

  • #3 - YouTube ($1.65 billion)

    <strong>What people said...</strong> <a href="" target="_hplink">Goldman Sachs</a>: "We expect investors to be excited by the strategic opportunities, but they will be skeptical of the $1.65 billion price, given YouTube's early stages" <a href="" target="_hplink">Martin Pyykkonen</a>, analyst at Global Crown Capital: "I would think that a lot of advertisers would be willing to pay a premium for a video search ad opposed to paid search text" <strong>Acquired: 2006</strong> <em>Source: <a href="" target="_hplink">Google</a></em>

  • #2 - DoubleClick ($3.1 billion)

    <strong>What people said...</strong> <a href="" target="_hplink">Federal Trade Commission</a>: "The FTC lacks the legal authority to block the transaction on grounds, or require conditions to this transaction, that do not relate to antitrust" <a href="" target="_hplink">Jeff Chester</a>, executive director of the Center for Digital Democracy: "The FTC is supposed to protect the privacy of Americans in the digital age. The excuse offered by the majority of the commission-that consumer privacy can't be addressed by current antitrust law-reveals a lack of leadership and determination to protect U.S. consumers" <strong>Acquired: 2008</strong> <em>Source: <a href="" target="_hplink">Google Blog</a></em>

  • #1 - Motorola Mobility ($12.5 billion)

    <strong>What people are saying...</strong> <a href="" target="_hplink">Henry Blodget</a>, editor-in-chief at Business Insider: "This deal could end up being a disaster" <a href="" target="_hplink">Jeff Jarvis</a>, author: "Google buys rat poison" <a href="" target="_hplink">Hendi Susanto</a>, analyst at Gabelli & Co: "Google and Motorola will create a stronger hardware - software integration to compete with Apple, Samsung, and HTC." <strong>Acquired: 2011</strong> <em>Source: <a href="" target="_hplink">Google Blog</a></em>