Best way to create feedback mechanism on user profile

I would like to add a tab to each member's profile that would allow other registered members to leave feedback or a comment about that member. What is the best way to do that? I have looked at CB Activity, but I'm not sure it will do exactly as as required and it includes lots or functionality that we don't need. I have tried using the Guestbook and Profile Wall elements of CB ProfileBook, but they allow the poster and the profile member to delete or unpublish entries. For our feedback system the poster should be able to edit their post and the profile owner should be able to add a reply to a post but only site administrators should have the ability to delete or unpublish a post or reply. This unpublish/delete restriction does not seem to be available in CB ProfileBook options. Is there a way within CB to create the kind of comment/feedback mechanism we need?

Guestbook seems like the closest fit if we could remove the ability for members to delete or unpublish...

CB Activity would be the best way to do that. You don't have to use all the functionality of CB Activity though. For example you can unpublish the Activity tab in CB > Tab Management then use a Comments field for what you're wanting.

Guestbook seems like the closest fit if we could remove the ability for members to delete or unpublish...

That won't be possible unless you modify CB ProfileBook. CB ProfileBook itself will eventually be deprecated as its functionality is almost entirely replaced by CB Activity and CB Blogs.

I have setup Activity Comments as you suggested and it seems to have all needed functionality. Is there a way to disable the "hide" functions? It is not suitable for our use and I think it will be confusing to many of our users. The main issue is that, if they choose to hide a particular post or all activity from a particular user, there doesn't appear to be any way for them to unhide it. Of course there is that option immediately available, but if they click the "x" on the unhide message or if they leave their profile and then return, the option to unhide does not appear to be available. This will lead to numerous support requests that it doesn't look like we can easily resolve without directly modifying the SQL table. Can we use CSS to hide the 3 little dots that give them access to the various "hide" functions?

Is there a way to disable the "hide" functions?

Not at this time, no. Have added a feature ticket to implement this in a future release.

forge.joomlapolis.com/issues/8137

Adding new parameters is frankly a nightmare right now since they're in something like 5-6 different locations so I don't know when this will be implemented.

The main issue is that, if they choose to hide a particular post or all activity from a particular user, there doesn't appear to be any way for them to unhide it.

Create a Joomla menu item with menu type of Community Builder > Plugin then set Plugin to CB Activity and you can link to the hidden comments page for unhiding.

Can we use CSS to hide the 3 little dots that give them access to the various "hide" functions?

You can if you want to, but you'll lose edit/delete functionality as well since that's also where those menu items are.

If my customer chooses to remove all hide/edit/delete functionality (which I'm pretty sure they will), how can I find the CSS that needs to be marked as "hidden" and is it possible to make this change so that it will not be overwritten with the next software update?

Custom CSS can be added to CB using CSS Overrides shown below.

www.joomlapolis.com/blog/kyle/18711-template-css-overrides-made-easy

Each menu item has its own CSS class. The below should hide those menu items specifically.