The National Science Foundation is funding the “Truthy” database, intended to detect “false and misleading ideas,” "political smears," and other "social pollution” in online political activity. Researchers at Indiana University have received $919,917 (so far) for this project. The resulting open-source platform will be made publicly available, including via a web service open to the public for "monitoring trends, bursts, and suspicious memes.”
According to the grant, “This service could mitigate the diffusion of false and misleading ideas, detect hate speech and subversive propaganda, and assist in the preservation of open debate."
“Truthy” claims to be non-partisan. However, the project’s lead investigator Filippo Menczer proclaims his support for numerous progressive advocacy groups, including President Barack Obama’s Organizing for Action, Moveon.org, Greenpeace, the Sierra Club, Amnesty International, and True Majority.
By the way, FTFA, it tracks only Twitter.