@cheong: Got a reply from the windows store people after reporting the app
Thank you for response and concerns in regards to the integrity of the Windows Store. being a democracy we must allow absent censor/discrimination alot of apps into the market. There is a app developer agreement and certfication requirement criteria that each app has to met.
Upon release to the store there are random app reviews, consideration of the impact of value, consideration of the reviews/ratings apps may receive from consumers or even valid violation that can later present the opportunity for us to act.
Please note we don't take our responsibilities or offereings lightly. The Windows Store is the venue that is in place to allow app developer to share, develop, and sale apps to a large market. But reassured that we do take the measure to protect our business, reputation, and our consumers.
You concerns have been shared and any and all necessary actions if required will be taken.
I also note that the apps have now either been removed or had their descriptions changed to say explicitly that they are how to videos.