The signal to noise ratio with regard to trackbacks and pings has gotten so bad that I have (reluctantly) disabled Trackbacks. So much crap was coming through, so often, that I had no choice. The spammers have finally worked out that, at least for CS, even if comments are all set to 'must be approved', trackbacks and pings are still automatically published.
It sucks, but such is life. Until such time as Telligent wake up to themselves, drag their sorry asses into the real world, and give us the ability to manage trackbacks like we can manage comments, then the status quo will have to remain.