I’m working on configuration manager for Feed Preprocessor to give you more control over your feeds.
Some time ago I’ve added an interface for global configuration (I never posted about it because only I can see it) and today I changed how one of preprocessing modules work and changed some global preprocessing configuration that you’ll start seeing in your feeds (that’s why I’m posting about it now).
Shortly, I rewrote a module that inserts “In-feed controls” (sister project for Feed Friends and Feed Preprocessor) directly into new items so now in addition to “Share” button (that changed it’s appearence to 
Share with Feed Friends), you can see so common 
Add to del.icio.us, 
Digg it and 
Search on Technorati links.
Now you don’t need to depend on blog author to insert these links into posts – you can use Feed Preprocessor (which is part of Feed Friends’ feed management) to add them to all feeds you’re using.
P.S. interface to configure preprocessing is on it’s way and you’ll be able to do more preprocessing for your feeds relatively soon.