the 90 day rule will kill this forum
and to be honest asking EVERY member to do this to make your job easier just seems lazy, especial when this wont actually cut down on spam... after all you wont know who is a spam bot till you have 100 odd new spam threads to thin the information out even more.
The internet is about being lazy for most people, especially casual posters. I'm a member of loads of forums and sometimes I wont go back to one in about a year. CPF is a good example of this. loads of members that just go back when they want some info.
Just my opinion
John