simulating row ownership

I have a table where I want everyone to be able to be able to insert and
select.

But they should only be able to update and delete rows that they "own". The
table

has a column indicating the owner.

What is the best way to accomplish this? I'm not real familiar with rules,
but it seems

that I can do this with rules for update and delete applied to the table.
Someone

had suggesting using views, but since I can't update a view in postgres, I'm

not sure that views help here.

I assume if I use rules, then I need to grant all to public, and let the
rules prevent

users from updating the wrong rows?

Any advice is appreciated.