The Globe today has an op-ed piece by some guy complaining about a teacher-union boycott of Wal-Mart. He's described as "director of the Labor Policy Center for the Evergreen Freedom Foundation, a nonpartisan, public policy research organization based in Olympia, Wash."
Dan spends five minutes with Google and discovers that the foundation is, in fact, heavily funded by conservative groups, the sort that just don't like unions - and got $300,000 between 1998 and 2000 from a foundation set up by the late founder of Wal-Mart. Nothing wrong with letting them speak, but the Globe does a disservice by not letting readers know where the author is coming from, he writes:
... Needless to say, full disclosure should have been provided. But I suspect that the Globe editors would rather have killed the piece than admit it was funded with money from the likes of Wal-Mart and Scaife.