Web 2.0 has had a huge impact by enabling user generated content, wisdom of crowds, vast data, participation architecture, network effects and openness. It has shifted culture and economy away from mainstream products towards niche markets in the "long tail". Examples include niche games online rather than console games, and niche films on sites like Kickstarter rather than mainstream films in stores. More people can now participate in and contribute to culture online through collaboration and sharing. Examples include music streaming sites like iTunes where people can publish, buy and comment on music.