I was thinking about Media Bias, then it hit me. Every source is biased one way or another, usually due to the opinions of the editors and the journalists. The hard bit is finding out which way a particular source is biased. For example, most people would know that the Guardian is biased towards the left-wing. Papers like the Independent tend to lean to the right.
As for the free newspapers... If they've got any bias, they're keeping it very well hidden.
I like to check out blogs as the next thing in news. They're biased, yeah. But at least they actually admit it!