Will this use internet (iphone)?

[Lalala]

I'm trying not to use internet on my phone because I only have so much until I reach the limit, so do game apps use it? Also, I have facebook and twitter set to send me notifications, does it use internet if I don't open them? Would I have to log off?

And also, I have the email app that came with the phone that updates me when I get an email. Would I have to log out of that?

Thanks Anything else you can think of would be great