As of now, it is not "garbage", more like toxic waste!
When anonymous postings become forbidden and accountability is established, with less personal attacks, libel, slander and censorship, only then will we perhaps see a responsible "citizen's media."
Until then Wikipedia's investors and venture capital sources such as Bessemer Venture Partners, Dan Gillmor, The Omidyar Network, Pierre Omidyar, Mark Andreessen, Reid Hoffman, Joichi Ito, and Mitch Kapor and we, the global public, are being used and abused.