The Ticker: Twitter IPO; Instagram Ads; Voice of Siri; Print Lives; Print Dies

CNN: Twitter’s $1B IPO Reveals…That the Company Still Can’t Turn a Profit

AllFacebookGet Ready for Ads on Instagram

GigaOM: Meet the Real Voice of Siri

PR Week: There’s a Lot of Life in Print Media Yet

Jim Romenesko: Arizona Republic to Reporters: Starbucks/McD’s Is Your New Office