In Advanced Search (which is the most confusing utility to our users):

Date Range

Maximum date range is 4 .

Not indicating what the "4" is about is very confusing. Would prefer if there was some way to simply give a choice:

--Posted Today
--Posted this Week
--Posted this Month
--Posted this Year
--Posted in (choose a list of years from inception of board until 2008).

People generally think about the oldest it could be and move forward, so the "Newer Then" before the "Older Then" can be very confusing.