The Ticker: Phone hacking inquiry; Newspapers online; Social ROI; Vogue’s 1,000 influencers; Klout + Foursquare;

ITN NewsDavid Cameron announces phone hacking inquiry details

FishbowlLANewspapers Gain A Larger Share of Internet Audience

MarketingWeekBrands unable to measure ROI in social media, says social media expert Solis

AdweekVogue Casts 1,000 ‘Influencers’ for Network; Condé taps word-of-mouth, social stars for advertisers’ sake

TheNextWebKlout adds Foursquare checkins to better measure your social influence