How Linkedin gets 20x more money per user than Facebook

Forbes has LinkedIn CEO Jeff Weiner on the cover—but the professional social network’s business model is the real hero of the story. Here are some of the amazing statistics Forbes’ George Anders reports: LinkedIn users spend an average of 18 minutes a month on the site. Facebook users spend 6.4 hours a month. But LinkedIn gets $1.30 in revenue …

Unemployment rate at 8.1% – job growth seen in manufacturing, architecture, engineering, and computers

Hiring continued its slow pace in April as employers added a modest 115,000 jobs to their payrolls. The jobless rate inched down to 8.1% last month, the Labor Department said Friday, but that wasn’t because more people were employed. Rather, the rate fell as more workers dropped out of the labor force (about 342,000 workers). …

Renewable energy production variability by hour of day, and by season (graph)

– …illustrate the variability of wind and solar generation relative to the comparatively smooth output from other generation sources – Power produced by geothermal, biomass, biogas, and small hydro generators can be easily dispatched, meaning it can be either increased, decreased, or controlled to remain fairly constant. – Wind resources are often more available at …