According to Britvic Soft Drinks over 65,000 Tango drinkers have so far logged on to the Tango website which is offering £1.50 (US$2.10) free mobile phone talk time. The UK based company said that over half of the 65,000 visitors to the site have registered for their £1.50 worth of free calls in the promotion, which has been running since May and is designed to drive brand awareness and sales.