Is this a good jailbreak for iPhone 4s on 7.1.1?

Is it safe I'm not gonna get some weird **** instead of a jailbreak? I'm not talking about getting bricked.
Here's the link

http://www.7jailbreak.com/mobile.php

There's no jailbreak for iOS 7.1.1

Don't think jailbreak on iOS 7 or above is necessary, as there are many useful features in the system already.