(AP) -- Microsoft Corp. CEO Steve Ballmer is trying to improve Yahoo Inc. investors' opinions of the companies' search-advertising partnership.
Yahoo's shares fell 12 percent Wednesday and continued dropping Thursday. Ballmer told a meeting of financial analysts that he doesn't understand why, saying, "Nobody gets it."
The CEO says investors should be happy with a deal that erases Yahoo's search costs but lets it keep most of the revenue from advertising sold alongside search results on its Web site.
Ballmer also says combining the two companies' search traffic will draw more advertisers.
Microsoft shares were up 1.1 percent at $24.07 in midday trading Thursday.
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