Recently active topics in PBwiki tagged with user

How can I add security to files? I don't want all files available to all users.

What is the difference between a reader, a writer and an editor?
Can readers be writers on some pages and only a reader on others?

I have tried to share my private pbwiki 2.0 with someone else. I set him up as a user, but he tells me that he is unable to login. When he clicks the link that was sent to him, he gets this error message:

Oops! We can't recognize the link you clicked on.

To fix this, please cut and paste the full URL from the email into your browser (then press Enter).

He did the copy and paste, but the same error message comes up in the browser. Same result in firefox and safari.

Can you help? Thank you.

How do I resend the Wiki Invite? Please help! I have several people who have indivated they did not receive the invite. I know this may be a proxy issues, yet I just want to resend the invitaiton. HELP!

Is there a way to see user login information for each user? Currently you list the content created and the user that created it; It would be great to see last login info for each user.

Is there a central resource / blog / page / site where PBWiki 2.0 users can make contributions to the project? I'd really like to help!