you can choose to just hide posts from those particular people and the games you don't want to receive everybody's progress on, that way the person is still on your friends list but you just don't see their comments and updates.
Feel free to add me too - I use the same nickname there as here so you should be able to find me ok.
I warn you I am addicted to Farmtown so you might like to hide the posts from that game if you are not similarly addicted! :)
Next trip - Bali! (March 2015)