If you see someone heard something about being root and you can do many things with the root and do not know what I will not even have to explain a little far.
Rooting your phone is a process that makes your Android to get superuser privileges. Once you have this level of power on the phone you can change things like change or delete system applications or changing Rom.
advantages:
1 To improve the Hardware
There are many phones that have a good team but as the software is not top line are undervalued such as Samsung galaxy S.Al have the root can change that.
Get 2 roms for your terminal.Como technology grows everyday software is not going to be different and for example you buy a phone with android 2.3 and updated to 4.0 (if your mobile is patient) can not put the version 4.0. If you're lucky maybe the manufacturer will optimize version of android but that takes much after and above all operators which are also changing the android.Por such changes or gets Movistar Movistar Imagenio applications or other. But as some people called them optimize cooks roms as coming directly from Google to have root you can put them in and have one Samnsug galaxy s rom 4.0.
3 Power to install applications that allow you to give more speed to android, remove advertisements, increase ram, delete applications that do not use the system as maps or Gmail, aplicaiones installed on the memory card etc.
disadvantages:
1 mobile which guarantee that if the phone is broken do not fix it for free or I'll cambian.Pero asusteis hos is not reversible is lost. :)
FAQ:
¿Jaibreak Rooting is like the Iphone?
No jailbreak is for downloading content signed by copyright.Y do not root or rooting is to have full access to the cell and change whatever you want as deleting system applications.
As you can see there are many advantages and few disadvantages but if you're asking him think it over.
I'll leave you and tutorials for rooting Huawei U8650 mobile like Sony Ericsson Experia Arc, Samsung Galaxy SIII so on.