Roundup: The growing internet ad market, San Francisco’s carbon tax, Google Maps and more
Here’s the latest action:
1) US internet ad market is big, getting bigger
2) San Francisco, home of the carbon tax?
3) Google Maps adds user ratings to local search
4) Wal-Mart launches cleantech accelerator
5) Visits to Facebook appear to drop
6) Proofpoint raises $28 million for email security
7) Piczo… Continue Reading