help with itunes ? :/?

[Amber]

i have an iphone 3gs ,on the same itunes account as my mums and dads and brothers iphone 4's , i was just wondering , if i download an app on my phone, can they see everything i downloaded , because i need to download a twitter app and if my brother finds out i have twitter, he will hack me -_- how can i make sure they wont see it while on the same itunes account :/?

[Kristy! ♥]

Unfortunately, there is no way that they can not find out what you bought on iTunes. With everything you buy, (even if it is free) a receipt is emailed to the main address on the account. Your best bet would be to just make a separate account if you don't want them seeing what you bought.