Currently you can call only US numbers.
Yahoo! Inc is an American public corporation. At the present time, the corporate office of the company is base in Sunnyvale, California. It is a global Internet services company. Among the products and services offered by the company are a Web portal, a search engine, the Yahoo! Directory, Yahoo! Mail, news, and posting. The company was incorporated by Jerry Yang and David Filo in March of 1995. The company is headquartered in Sunnyvale, California in Silicon Valley. It is one of the most visited U.S. websites. Microsoft had plans to acquire the company but in 2008 withdrew the offer.
Yahoo provides a wide array of internet services that cater to most online activities. It operates the web portal http://www.yahoo.com/ which provides contents including the latest news, Yahoo Finance gives users quick access to other Yahoo services like Yahoo! Mail, Yahoo! Maps, Yahoo! Groups and Yahoo! Messenger. The majority of the product offerings are available globally in more than 20 languages.
Companies are selected automatically by the algorithm.
A company's rating is calculated using a mathematical algorithm that evaluates the information in your profile. The algorithm parameters are: user's rating, number of resolved issues, number of company's responses etc. The algorithm is subject to change in future