Dropped iPhone in the toilet? - 2

I had it on lock in my pocket, got up, flushed and my phone fell in. I IMMEDIATELY pulled it out, grabbed a bunch of towels and wiped it, disinfected it. Last thing that came to my mind was to turn it off, I was shaken by the incident. It's working. I'm typing on it right now. The vibrate switch on the left doesn't work though. Everything else works. The headphone jack area by the plug is somewhat red.So. What to do?/

Should i give my son an iphone 4?

I havnt given my son an i phone yet he says he needs it to confirm his facebook account and talk to friends but i don't know if i should or not what do you recommend the iphone i want to give him is a my old iphone 4 it works fine and i have transfered all my contacts into my new phone

Iphone thinks it's connected to another Itunes?

I had a virus in my computer so I had to get my brother to renew the hard drive and in short I had everything on my computer erased, and when I say everything i mean… EVERYTHING. All my music, my Itunes, all my files, GONE. But for some reason when I re-downloaded my Itunes onto my new hard drive it knew all of my old data, ( if that's what you call it ) so my Itunes won't let me transfer songs I downloaded from Itunes onto my Iphone 4 because it says my Iphone is connected to another Itunes. When really it's not. It just thinks my old Itunes is still active. I managed to transfer all my 300 songs from my old Itunes onto my phone before everything got erased so I don't want to sync it ( manage files manually ) because then I would have to re-download 300 songs again. I tried to uninstall my new itunes but when I re-installed it, all my music I had on it before was still there. Anything I can do? Sorry for the long paragraph but thanks in advance!

Do i need to make a new iTunes account for my iPhone?

Okay, my dad got a new phone so he gave me his old iphone. I already have an ipod that has an itunes account, do i need to set up a new account for the phone?

Added (1). But does it matter that my phone is jailbroken and my ipod isn't?! Will it mess up my phone? :/

What is DropBox? How does it work?

I plan on purchasing both an iPhone 4S (16GB) and an iPad 3G (32GB) this holiday season. My question is, since I already have an iPod classic (80GB), I won't be storing any music on my iPhone or my iPad… I have an external hard drive I use to store all my music…

I'll be using my iPhone for call, text, brief internet browsing, some applications, twitter, instagram, and checking emails throughout the day

I'll be using my iPad for watching movies, using applications, frequent internet browsing, Facebook, Skype, Facetime, reading online books and newspapers, casual application games etc.

My question is, some people have brought up the DropBox software to me several times and explained that it can save space on these respective devices for me.

tl;dr

What is DropBox?
How does it work?
How much space does it offer?
Can I have more than one DropBox account?