It's actually getting very difficult to find a free home for lists of
that size (2500 subscribers). With just 20 postings a day you have 50,000
messages to deliver, and this costs non-negligible amounts of money. It
can mean the difference between having to upgrade your hardware and being
happy with it until the next fiscal year, so it's probably going to take
more than a single smile :-) AOL and eWorld both host large lists for
free and this is where I would apply.
Eric