You shouldn’t believe everything that you read on the internet. Crazy, right?
There are definitely bloggers who know what they’re talking about, and there are some I trust for the most part, but you should not take what bloggers write as gospel. There are extremely low barriers to entry, so anyone can become a “points/miles expert” overnight (see the Friday interviews on Million Mile Secrets as examples). As a personal example, while I like to think that I generally know what I’m talking about, a reader smartly pointed out that Aeroplan offers even better rates for intra-Asia travel than Alaska Airlines in one of my recent posts. I fully admit that I don’t know anything about Aeroplan, which is why you shouldn’t trust me if I write anything about the subject.
More perniciously, there are no journalistic standards within the points/miles blogosphere. In the past year or so, we’ve seen several major blogs write about supposed devaluations without full investigation, which has justifiably caused people to freak the eff out and do stupid things. And since these are the big players in the space who are sparking these fires, almost everyone assumes that they know what they’re talking about, so all of the smaller blogs repeat the same false information until everyone thinks it’s true even if there’s no actual confirmation.
Larger bloggers also have different incentives from their readers: namely, their primary job is to market financial products to consumers in the form of selling credit cards. Other people have done a much better and more comprehensive job delving into this problem, but know that there are serious sums of money flowing through some of these blogs. (I believe that smaller bloggers are less prone to conflicts of interest because they generally get all of their compensation, if they’re generating revenue at all, through page views, and the incentives for driving page views seem to be more aligned with those of the reader).
All of this is just to say to read everything with a grain of salt. For sensational news or predictions, ask yourself if they make sense; for any credit card links, ask yourself how the blogger is getting compensated.