Basing the quality of a How To Guide on how many people the author can get to promote their How to is a very bad idea if you want good, quality How To's.
On the other hand, as a means to promote a new website on the cheap, I guess this contest does its job.
Rating System also Sucks.
Take Tecmo's very good PC building How to, which is rated at 4 stars
http://www.computing.net/howtos/show/guide-to-building-a-pc/509.html
now compare to this 5 star rated 2 sentence how to...that basically says don't click on weird links
http://www.computing.net/howtos/show/how-to-prevent-loading-a-fake-antivirus/475.html
Further, if one bases quality on popularity, How To's done extremely well on highly technical articles will lose out to stupid ones such as that don't click on random popups to avoid fake antivirus's how to, simply because more users will see the silly stupid one and read it.
Ex. How many people will read a detailed how to on Why overclocking Dmg's a CPU incorporating layman level explanations of quantum mechanics, vs a a How To titled "How to find the cheapest Ipod/Ipad" with a single sentence saying "google cheap Ipod/Ipad."
Guarantee you the latter will be far more popular despite being worthless.
This also damages the reputation of your new site if all the award and top ranked How To's are a bunch 2 sentence fail post's with a catchy title.
In short, seriously flawed system here...