I wasn't sure if this has been posted already, i didn't find it in a search.
Filterset.G is a filter list for the adblock firefox extension that is regularly updated with more ads to block. It can be imported/appended into your current list.
Now an auto-updator extension has been released that automaticlaly updates your filters list whenever a new version of the list is released.
Link: Filterset.G Auto-updater Extension