Apple's iPhone 2.0 launch and Yahoo's search ad deal with Google overshadowed all other tech events this week for IT investors Yahoo and Apple announcements overshadowed all other tech events this week for IT investors. Apple’s iPhone 2.0 launch raised mobile and consumer market issues, while Yahoo’s deal with Google was anticlimactic in the wake of failed talks with Microsoft.All eyes were on Apple’s $199 iPhone 2.0 launch this week as the announcement, made Monday by CEO Steve Jobs at the Worldwide Developers Conference in San Francisco, stirred concerns — and hope — for the overall mobile device and retail tech markets.[ For all the news about the iPhone 3G’s launch at WWDC, check out InfoWorld’s special report. ] Apple’s good fortunes since the introduction of the iPod have depended on the success of its hit consumer products, which in turn have a “halo” effect on its Mac line. But attention is also paid to these launches because the devices themselves are seen as harbingers of things to come in the music, broadband video, and smartphone markets, and IT investors bet heavily on them.Right after the launch, the low price on the 8GB model and the fact that the company did not release a high-end 32GB version, stirred fears that Apple would see its profit margin erode. Apple shares sank $4.03 to close Monday at $181.64. But the day after, high-profile analysts issued research reports saying the low price will help increase market size. They also said the already widespread geographical coverage, and an ending to exclusive carrier agreements, are setting the stage for iPhone user growth.Citigroup and Lehman raised price targets on Apple Tuesday, sparking Apple shares to rebound to $185.64. Citing “potential for significant market share opportunities in the handset and personal computer markets,” Merrill Lynch on Wednesday added Apple to its U.S. 1 list, the investment bank’s top-ranking investment suggestions for “buy”-rated U.S. companies, and reiterated its $215 price target. The investment firm also raised its forecast of 3G iPhone unit sales, estimating a 12 percent increase in fiscal 2009 to 22 million units, and a 13 percent increase in fiscal 2010 to 34 million units. But Apple shares slumped again on Wednesday, as tech companies were dragged down with the rest of the market on renewed fears of high energy costs and inflation. The uncertain economy has depressed IT company share prices this year.Though first-quarter financial reports were better than expected, there are enough reports about faltering sales in pockets of IT — especially in the retail market — to stoke fears. For example, shares of Texas Instruments fell Tuesday after the company adjusted its second-quarter earnings and revenue estimates, bringing the top range of its forecasts down. Company shares declined 2.1 percent to close at $30.66 Monday.TI now says second-quarter sales will be between $3.33 billion and $3.46 billion, compared with its prior estimate of $3.24 billion to $3.5 billion. The chipmaker said sales of chips for mobile phones are weak in the second quarter and revenue from wireless devices is running behind last year’s levels. In the Internet arena, the big news of the week was the Yahoo-Google search ad deal. After Microsoft ended its acquisition bid for all of Yahoo on May 3, the companies said they were negotiating for what observers believed was Yahoo’s search-advertising business. That, in fact, turned out to be the case, but Yahoo once again spurned Microsoft.[ For the complete saga of Microsoft’s attempted takeover of Yahoo, check out InfoWorld’s special report ]In a statement on Thursday, it said, “With respect to an acquisition of Yahoo!’s search business alone that Microsoft had proposed, Yahoo!’s Board of Directors has determined, after careful evaluation, that such a transaction would not be consistent with the company’s view of the converging search and display marketplaces, would leave the company without an independent search business that it views as critical to its strategic future.” Several hours after releasing the statement, Yahoo announced the deal with Google, which essentially outsources some search ad business to the dominant player in the market. Google ads will run along with Yahoo search results, and Yahoo expects the pact to generate $250 million to $450 million cash during the first 12 months. Yahoo said the potential annual revenue opportunity of the deal is $800 million.Rumors about the deal came before the close of normal trading, but investors appeared ambivalent about the whole saga. Yahoo shares dropped by $2.63, or 10 percent to close at $23.52 Thursday. Microsoft shares rose by $1.12 to close at $28.24. IT investors might be relieved that Microsoft earnings will not, after all, be diluted by a big acquisition.And as usual in the online arena, Google was the winner of the day: shares closed up by $7.75, at $552.65, and continued to drift up in after-hours trading. Technology IndustrySoftware DevelopmentDatabases