We finally added universal user comments into Syrinx CS, which allows users to add comments to any type of business object in Syrinx CS. For example, users can add comments to blog entries like this one. In fact, the Syrinx site blogs now allow user comments because the Syrinx site is using this new feature.

Administrators of a Syrinx CS site can setup the level of support for user comments on any type of object through the company security settings. For example, they can allow anonymous users to add comments for blog entries and they can allow administrators to edit and delete any user comment. At the same time, general articles could be setup to not allow anyone to add user comments, or only registered users could add comments to general articles.

Whenever non-authenticated users add comments, they will also be presented with a captcha display. Users that have logged in can add comments without seeing the captcha display.

User comments for any given business object ultimately are a forum thread. Administrators can see all user comments created on any business object via an admin forum view of user comments. This makes it very easy to see new comments and manage them.

User comments also pass through the content filtering options of the company, so you can fully control what type of content the user tries to put into user comments. Anonymous users may only be allowed basics like bold and italic while administrators adding comments can be allowed to put anything including scripts, flash objects and others.
This was written so that it can also be used for other kinds of user comments. For example, users could have comments from other users about their profile. Contacts could have "phone records" for each time someone communicated with the contact.

I've noticed other sites connect with external technologies like "My Blog Log" from yahoo which will allow users who register on your site to provide a common profile from the yahoo site. It does a lot more than that, but one thing it can do is profile a profile image for users. Other sites hooking into this are able to show the user profile info in the user comments on their blog (I believe Word Press can do this, but could require an extension). I'd like to see Syrinx CS have this support as well. I'll add that to the big TODO list for Syrinx CS.