To add on to the question pool,

I understand that the pctused is used by oracle to put the block into the free list for future inserts.

1) Will any new blocks(extends) added will directly put into the freelist ?

2) I know that I have a table, in which I rarely have any updates and deletes but only insertions, then can I set the parameters for

PCT FREE = 100
and PCT USED=0?
Badrinath