The document discusses three examples of wikis used for political participation in Spain: 1) Pásalo, a viral SMS campaign used in response to disinformation around the 2004 Madrid train bombings and elections. 2) Vivienda Digna, a wiki that coordinated street demonstrations for decent housing and saw participation grow organically. 3) Lo Prometido Es Deuda, a wiki archiving campaign promises from the 2007 elections that saw significant usage and media coverage.