syncing application

[Choucha]

Hi everyone
i have an Iphone 3G 16GB, and recently i tried to synchronized some applications, that i got from a friend on USB ,on my apple MacBook Air, and after the syncing, it gives me a message error that those application can not be verified ...
i don't really see what is the problem, since i can sychronize music perfectly with no prob.
Can anyone help me please...
If it is a piracy issue, some of the app that i got, i downloaded them from appolo.us, so what could be the problem here?
thx

[MrEous]

Your 'friend' purchased the apps with 'his' credit card...only he will be able to use them.

Getting around this is considered piracy.

[dirt_mover3g]

Yea the only way to get apps to work is downlaod them on your iTunes account. I don't believe there is any way to trick iTunes into transferring apps from account to account.

[Ramesh]

Yea the only way to get apps to work is downlaod them on your iTunes account. I don't believe there is any way to trick iTunes into transferring apps from account to account.

If your friend authorizes your computer, then they'll work on your phone.

[Choucha]

thanks for ur replies