Certifications have been an area of interest for me for quite some time. I see certifications as showing a persons expertise in a certain area. There was a time a few years ago when Microsoft certifications were so easy that I almost stopped considering it. I have heard from people that it is better now and that newer certifications does focus on testing knowledge. (Given the prevalence of braindumps, I still am not 100% sure about that yet)
But given personal experience I would say if you take time out from a hectic life to go an take an certification, it at least shows some kind of initiative to learn from your side..
I was offered a license to review a certification product called uCertify recently. It is basically a preparation kit. It is not really a kit that will take you from no knowledge to certification. It is more of a tool that will help you get prepared for the exam if you already have knowledge of/experience in the specified area.
So it basically provides you with study tips and simulated exams that will help your confidence and also refresh topics. Also if you find that you score poorly in certain topics, those may be areas you need to brush up on.
The kit also has a few articles, but I did not find then exhaustive of too helpful. So I would recommend, you study up for the exam and use the tool to check out your preparedness for the exam, before you actually get to the exam. (the kit I got for review had 4 prebuilt exams with around 230+ questions and study tips)
The UI is quite clean and usable, but I did get a few crashes when it automatically updates the engine or the exam kit. Also I have not seem updates for quite sometime now and so am not sure how regular these are.
Bottom Line: This is a good tool to test your preparedness for the exam and not something that will teach you for the exam.