Recently active topics in twitterfeed tagged with filtering

I use Twitterfeed to send people's Facebook status updates to a private Twitter account, subsequently receiving these updates on my mobile.

This works very well, however some of the people whom I follow on Twitter synchronise their Twitter updates to Facebook. It would be good if I could remove their Facebook status updates, which are always duplicates, from the Twitterfeed but I can see no way of achieving this.

Thank you for an excellent application.