You can now have 1000 lists in Twitter! That is a welcome change as the old limitation of 20 got to be a litte annoying especially after about 2000 followers. You had to be very creative in grouping folks and sometimes it simply didn’t work. There need to be more subgroups. Well now you can group to your hearts content! Here a short article on Mashable, http://mashable.com/2013/05/30/twitter-lists-2/