Latest figures from Hitwise suggest that Twitter has just become ever more popular in Blighty - last week the site’s share of UK internet visits was 70% higher its share of visits in America. Interestingly, Twitter looks more likely to enter the mainstream here than across the pond. Twitteriffic, the iPhone’s tweet interface, has US ads served at the moment, with UK content planned. That step towards engaging local audiences could mean a big push on taking the channel more seriously. Any thoughts out there?