I think it's a must. Whenever i have participated in these sessions there's always questions that come up. They do not participate in the voting, they're their to add input to the discussions.
Incidentally I am of the opinion that more participation in all areas and aspects of Scrum by the product owner is a good thing!
--- In email@example.com, Robert Molchon <rob.molchon@...> wrote:
> Hello fellow scrum enthusiasts,
> I was wondering what people thought of having the Product Owner attend the Team's product backlog estimation meetings?
> On one hand it can be a good thing, as the Product Owner can help provide color and answer questions regarding the meaning of the backlog items that the team is estimating. This is what we currently do. Each team has a weekly backlog estimation meeting to go through any unestimated items on the backlog and the Product Owner generally attends.
> On the other hand, I have noticed that being in the estimation meeting can lead to less well written backlog items since the PO knows that he or she will be in the meeting to explain it to the team.
> What, dear friends, do you think?
> Rob Molchon
> Vice-President, Engineering
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