Shares of the search king edged up after RBC Capital Markets upgraded its price target to 950 from 840, though still shy of the $1,000 target others have set for Google (GOOG) recently. RBC said Sun. the upgrade was based in part on growing appreciation among advertisers of Google's YouTube video site. The top 100 advertisers on YouTube raised spending 50% last year, and revenue for the site is expected to top $4 bil this year, RBC said. Google shares, up 29% since mid-Nov., rose 0.4% to 834.82.