I don't want links to source pages

I've used before your plugin without problems. Now I'm using it on http://fastwebmenu.com/ and I obtain ALL posts that are pointing in title to original post in target blank, for example first post points to http://www.restaurantmagazine.com/tacotime-updates-store-design-packaging-and-adds-popular-menu-items-for-new-branding-launch/?utm_source=rss&utm_medium=rss&utm_campaign=tacotime-updates-store-design-packaging-and-adds-popular-menu-items-for-new-branding-launch instead of http://fastwebmenu.com/tacotime-updates-store-design-packaging-and-adds-popular-menu-items-for-new-branding-launch/?utm_source=rss&utm_medium=rss&utm_campaign=tacotime-updates-store-design-packaging-and-adds-popular-menu-items-for-new-branding-launch
or soething like that. Wich way to fix?