Is this website for jailbreak dangerous?

Can the website jailbreakmenow.net harm my iphone if I jailbreak threw there. Please let me know As soon as possible. Cause I really wanna jailbreak my iphone but I don't know if I do it threw here if it can stop working

DO NOT USE ANY OTHER JAILBREAK!

Use only Evasi0n 7! It is currently the only jailbreak for iOS 7.0.0 - 7.0.4 out there. All of the other ones are fake. And jailbreaks are free and unlimited. Jailbreakmenow.net is just trying to steal your money!

Evasi0n 7:
http://evasi0n.com/

Make sure to backup your iPhone before starting!

Tutorial on how to use it:

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  • Is this dangerous? If so what is causing it? I've left my iPhone under my pillow a few times overnight, when I wake up it is BOILING hot. The battery goes from 70-80% to 0%. I've heard mobile phones give off harmful radiation, so I'm pretty worried. What could be causing my phone to do this if it is locked?
  • Is the app CocoPPa dangerous for iDevices? I wanna change all my apps with CocoPPa, but I hear it can cause problems on your iPhone/iPod/iPad so I don't wanna risk it. Has anyone who's tried it encountered any problems?
  • Is jailbreaking iphone 4s dangerous? I just got my iphone 4s yesterday and i'm wanting to jailbreak it, i jailbroke my ipod about 2 weeks ago but i just got this phone and paid to much money to ruin it. I just wanna know if it will make it slower or change anything, or break it in anyway, and is it worth it?