Microblogging site Twitter is testing "Promoted Tweets" and "Promoted Trends" as potential ad revenue streams. But the company isn't accepting any offers from politicians, nor are politicians clamoring to become the next popular hash tag.
While hundreds of positions are open at the tech companies of Silicon Valley, the unemployment rate is still 11.5 percent. The divide between the young engineers and the old may play a role, and that divide may be getting wider.
