A survey by Fluent LLC has discovered which tech companies Americans think will still exist in 50 years' time. Over 3,000 people were asked which tech company they thought was most likely to still exist half a century in the future. The search engine Google came out on top, cited by a third of respondents. It was followed by the ecommerce site Amazon, which came in at second place with 29%. Apple came in third place at 21%, with Facebook taking up the rear with 17%.