A very important aspect in judging whether a web hosting company is credible enough is to check out reviews concerning that particular host. Information like how long the provider has been around, policies and types and quality of services are a must to be known. It's a sort of consumer awareness procedure. Today, we find a lot of hosting review sites on the internet which reviews the providers. Now, it must be said here that it is a tendency of any customer to more likely highlight the negative aspects of a product.
The positive aspects are generally taken for granted. So you will most likely come across more negative reviews than positive ones. But of course you do find positive ones as well. But there is also a possibility that these reviews have not been tested for accuracy or may even be outdated. Check the date on which the review had been written, if available. This is because in case the provider has rectified it's shortcomings and started providing better service since the review, the review becomes outdated. Another thing to keep in mind is that if you find a particular hosting review site only highlighting positive aspects of a provider don't just blindly go for it.
There is a large possibility that this particular site is an affiliate of the hosting site. They are trying to sell you a product with a promotional review. The positive reviews need not be false, but being an affiliate, it will try to suppress the negative parts. Make sure that you go through both positive and negative aspects of a host provider before taking any decision. And reviews on the net should not be the only deciding factor. Apart from them, it's better if you do some manual asking around and take information directly from customers who were served by the provider under consideration. Web hosting reviews are certainly important but not should not the on and only deciding factor.