text: Traditionally held in the country that won the preceding year's event, the contest provides an opportunity to promote the host country and city as a tourist destination. Thousands of spectators attend each year, along with journalists who cover all aspects of the contest, including rehearsals in venue, press conferences with the competing acts, in addition to other related events and performances in the host city. Alongside the generic Eurovision logo, a unique theme is typically developed for each event. The contest has aired in countries across all continents; it has been available online via the official Eurovision website since 2001. Eurovision ranks among the world's most watched non-sporting events every year, with hundreds of millions of viewers globally. Performing at the contest has often provided artists with a local career boost and in some cases long-lasting international success. Several of the best-selling music artists in the world have competed in past editions, including ABBA, Celine Dion, Julio Iglesias, Cliff Richard and Olivia Newton-John; some of the world's best-selling singles have received their first international performance on the Eurovision stage.
  While having gained popularity with the viewing public in both participating and non-participating countries, the contest has also been the subject of criticism for its artistic quality as well as a perceived political aspect to the event. Concerns have been raised regarding political friendships and rivalries between countries potentially having an impact on the results. Controversial moments have included participating countries withdrawing at a late stage, censorship of broadcast segments by broadcasters, as well as political events impacting participation. Likewise, the contest has also been criticised for an over-abundance of elaborate stage shows at the cost of artistic merit. Eurovision has, however, gained popularity for its camp appeal, its musical span of ethnic and international styles, as well as emergence as part of LGBT culture, resulting in a large, active fanbase and an influence on popular culture. The popularity of the contest has led to the creation of several similar events, either organised by the EBU or created by external organisations; several special events have been organised by the EBU to celebrate select anniversaries or as a replacement due to cancellation.