Me, too! I wish that MLO would add user defined fields. Please see
Ilium's ListPro for a good example of this feature. (I am not
suggesting that ListPro is a replacement for MLO. It is just a great
list maker.) ListPro's columns are very easy to set up and use. Very
flexible. You can add up to 32 columns per list and you can sort and
filter by the columns even on a PPC or Palm.