Vote For the Future at timeline+25

A new website allows users to post and vote on future predictions. At timeline+25, users can post brief predictions on any topic, for years ranging from 2005 to 2029+. Others can then vote on their favorites.

Some of the entries are funny and just plain silly, but others show some solid insight. The site is a project of the ARS Electronica Festival being held in Austria this September; after Sept. 7, timeline+25 will be read-only. timeline+25 still has some rough edges; there's no criteria for voting, for instance, and predictions can't be viewed by category.