And all this because there are two communities I need to join to be able to comment but that I don't want showing up on my FL in all their prolix glory. The only solution seems to be to dump all my friends into a filter that excludes those two comms. But then, evidently, every time I view my FL I must first go through the 'manage friends' hoops and tell it I want to read the 'everyone but' filter.
Is there really no way of making a reading filter permanent? And why the hell doesn't the FAQ have a section on reading filters?