Ahn Tran, thanks for the reply on this post. I am looking at this as well. We have a neighborhood website for the residents and we wish to publish a directory of users. The only rules for this is that we need to give each resident the ability to opt out of the directory if they don't want their information published. Also we need to have this be only available to logged in residents and not open to the public. It would be great to have a tutorial on something like this or even a plugin (which I would be willing to purchase) that can do such things. I think user directories are a big think for organizations and think you could make some more revenue for this. Think about it:) I'm just jumping into metabox, so setting up something like this will take a while as I'm learning more about Metabox.