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Articles are always sponsored but the way they are sponsored may differ. For example, some sites are affiliated with a casino, while others may simply write a review and be paid a fixed amount. Anyway, most articles are biased. However, I don't think that this is too bad. With this unbeatable long-term house edge, most casinos work transparently, meaning they don't have to cheat gamblers as they know that a gambler will lose all he has invested in gambling on the long distance.
No, of course articles are not
always sponsored. Firstly, there are honest journalists for whom telling the truth is more important than earning big money. They may be in the minority, but they exist. Secondly, in some cases being honest is profitable. You are getting more visitors to your site when there's talk that your info is always legit. Thirdly, even when being paid by a company, some journalists still may write unbiased articles. The problem is that you never know what kind of reporter wrote the article you are reading. Here on this forum you can read the reaction of other members and make your own conclusions, while in other places comments can be moderated without you knowing it.
I would rather agree with milka, I have never seen an unbiased journalist regardless of the niche he or she is working at. Even if they seem to be unbiased, they have an idea that they want to apply or they are paid to push a particular idea.
Well, look at us, bitcointalk members wearing signatures and/or avatars advertising this or that company. Of course we are paid for that, but do we write
everything to advertise the sponsor? Far from that. Check it out yourself. Let me assure you that it's possible in some cases to be paid and stay not biased at the same time. If you mean most of the journalists are biased, then I agree. I just don't like generalizations. I mean, not all bitcointalkers, even those with no ad in their signature, are good, and not all journalists, even those sponsored by corporations, are bad, or,
biased, if you want.

That's it , we are only wearing the companies signature and we are having theit avatar banner but this does not mean that we will shill for them or even to defend them in case that they have cases here.
of course we will still stand on what is right and not because we are being paid to depend them.
this is how Bitcointalk moves , and not just for something that only proprietors will benefits, we wanted to gain our own reputation as advertisers .