Campaigns use various promotional methods like billboards, television and internet advertisements, social media pages, and printed materials to target audiences. Some well-known campaign examples are Nike's "Just Do It", Samsung's promotion of its Galaxy phones, and Red Bull's promotion of athlete Stratos's skydiving jump. Campaigns often employ techniques like using shock value, catchy slogans, mysterious messages, and featuring famous people to raise awareness and support for causes. The ALS Ice Bucket Challenge is cited as a very successful campaign that raised enormous sums through its use of social media and participation from celebrities worldwide.