Trend: Blocking adult mobile content

The growth of the adult mobile content industry has spurred growth of an ancillary market: technology to block it. Leaders in blocking questionable content on the desktop are losing out to startups like RuleSpace and Blue Coat Systems. Blue Coat's system, which uses a database of sites and keywords, is currently being deployed by Vodafone in the U.K. In the U.S., all major operators offer the ability to block adult content, but none currently do it in real time. The typical approach of U.S. operators is to restrict users to the "walled garden" of operator-selected sites.

For more on the challenges of mobile adult content:
 - read this Wall Street Journal article (sub. req.)