One problem with Twitter lists is that they are public by default. When I started using Twitter again last year, I pretty much partitioned everyone I followed

One problem with Twitter lists is that they are public by default. When I started using Twitter again last year, I pretty much partitioned everyone I followed into many such lists and discovered over time that though you can make them private they had a nasty tendency to become public again randomly and for no apparent reason. I asked their support repeatedly to look into this and never received a response.