Michael Holloway, 23 March 2009
Source: BBCSeven of the UK's biggest web firms have been urged to opt out of a controversial ad-serving system.
Phorm - aka Webwise - profiles users' browsing habits and serves up adverts based on which sites they visit.In an open letter, the Open Rights Group (ORG) has asked the firms to block Phorm's attempts to profile their sites, to thwart the profiling system.
