gobject api help

For those who deal with gobject API, when you pass a string (char* or
const char*) to an API function, whose responsibility is it to free
the string ? What is the usual practice ? Is there any way to
distinguish methods that take a string and "own" it and methods that
make a copy of the string so the caller can safely free it or reassign
it to something else ?

I noticed some anamoly in libbeagle methods, so please help me if you can.

Thanks,
- dBera

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Debajyoti Bera @ http://dtecht.blogspot.com
beagle / KDE fan
Mandriva / Inspiron-1100 user