Are the items of the list automatically included into the Usage Statistics Plugin or do you include them manually? And if so: how often do you update the Plugin?
A bot list from January 2011 sounds really outdated! I think, if “COUNTER complience” shall be taken seriously the current COUNTER bot list should be used. However, more timely updates of the bot list might cause problems for internal consistencies of statistics so perhaps a configurable solution might be best (letting users choose to update to the current bot list or not).