Over the course of 9 months, the percentage of British adults who say they have heard of VoIP or already make telephone calls via an Internet connection increased from 37% to 46%. A similar shift in awareness and use in the United States has been displayed (36% vs. 51%). Although the change in VoIP awareness is undeniable, there are still a substantial proportion of adults who are unaware of the technology (41% of British adults and 36% of US adults). Additionally, women are far less likely than men to have heard about VoIP in both Great Britain (28% of women vs. 57% of men) and the United States (34% of women vs. 62% of men), Harris Interactive found.