Earlier quoted context omitted.
It would be nice to know what that bias might be. For example, "bias towards truth" is different than "bias towards restoring the US to British monarchy." Mother Jones is of course a politically progressive magazine, so there's a bias in the topics they cover. But that sort of bias says nothing about the quality of the coverage. The Economist is also 'incredibly biased' in what it cover, and they do good job of it as…
I have never, ever, seen Mother Jones do "an investigation into things that people on the left or the Democrats wish we wouldn't." Maybe there was a time that they were more extremist than the Democrats, and that's what they are referring to. They are basically Fox News, but on the left. Both Fox and MJ make you less informed than before because they leave out facts and stories that don't fit their preconceived viewp…
I can't tell from that if you mean that the Democratic party is an extremist party, or if you mean that that Fox News is as moderate towards the right as the Democrats are towards the left, or both.
I thought 'Democracy Now' was more like the left-extreme version of right-extreme Fox News, only much less influential. In any cases, shouldn't your comparison be more to one of the conservative print sources? Is Mother Jones more like the National Review or The American Conservative for the left?
From what you wrote, it's hard for me to tell if your statement that the Mother Jones writing "gives you a distorted picture" is because you also have a distorted partisan view.
About the only times I read an article from Mother Jones is when it was submitted here on HN, which occurs a few times each week according to an HN search.
I looked now at several of their investigation pieces, at http://www.motherjones.com/topics/investigations?page=1 , I do not get the same feeling of being "less informed" that you described. To the contrary, pieces like "They Had Created This Remarkable System for Taking Every Last Dime From Their Customers" and "The World Bank Is Supposed to Help the Poor. So Why Is it Bankrolling Oligarchs?" seem like informative, well-written pieces that I would expect from those reputable sources you mentioned. They also link to primary resources, including SEC filings and court documents. That's not something I see from Fox News reports.
The web site lists only a small number of investigations, I can't find an investigation that the Democrats wish hadn't been reported. I instead looked for other long-form pieces.
Five years ago they ran "Why the Democratic Party Has Abandoned the Middle Class in Favor of the Rich", http://www.alternet.org/story/151108/why_the_democratic_part... (first appeared in Mother Jones, but doesn't appear to be online) and "Why Screwing Unions Screws the Entire Middle Class" at http://www.motherjones.com/politics/2011/02/income-inequalit... , which contains among other things the line "The Democratic Party has largely abandoned the working class".
The author of those piece is Keven Drum, who has continued with more recent articles like "Democrats Have Done Virtually Nothing for the Middle Class in 30 Years".
These do not appear to be something the Democratic Party would wish published.
My examination is only cursory, so while I don't see how you reached your conclusion, you have the longer experience with Mother Jones to be a better judge.