now suppose if my fren wants to open a new account of his own and put that new pub-id in his/her websites....
then i dont think that will be problem...

but as we work in networked environment our internet has same ip..dedicated broadband... (suppose no proxy)....

so now the question is...
will these two account(new acccount of his and my old account...) will be linked in anyway based on history of the sites...

i mean to say suppose he is does some thing wrong suppose click fraud....will that effect my old adsense..which are running in my sites...

or will google take it negatively and think that same people is doing this and ban both account ..as same ip will be used to access both adsense account....
or once he leaves my account and puts he own pub-id then things will be different?

please help