Running MJ as a service question?

[BADBOY]

Ok ! Thanks for reading this.

I did a search, but I couldn't find my answer.
I don't have a clue to what "running as a service" is .I have read a little about it
http://magicjackhacks.blogspot.com/2008 ... rvice.html

But , I don't really understand why I would want to do it .

So!.......................
1) What does running MJ as a service do for me ? Pro's , Con's .

2) How do run it as a service ?

Thanks
BADBOY