I think it is dangerous to use any one newspaper or wiki as a source of fact, any even more dangerous to use a link to a website with a clear political slant. The problem with unfamiliar links is increased by the fact that it is not always easy to unsubscribe.
Personally, I prefer a discussion where links to factual websites are provided to back up an argument, not to make the argument.
Being hit by one-line website links is a bit like sitting in a pub having a discussion and being interrupted by somebody who walks in, slams a pamphlet down on the table and walks out. Much better to offer to buy a round, sit down and join the conversation.