Since FD was trying to make my point for me, let me expand on it a bit. I think that potential recruits definitely see the polls, and while for a kid that is either a recruit this yr or next it's not anywhere near as important a a coach or facilities it matters more for longer term recruiting. If RPI is consistently in the top 15 or 20 teams people begin to assume that we are going to be a top program year in and year out so that it makes it easier to attract coaches and assistant coaches to the program.
Yes it is more up to Appert than team rankings to sell RPI to potential recruits, but if the recruit has seen RPI consistently in the rankings then we are well known to them and to their parents.
Also, if we draw extra fans on away games it will make teams more likely to want to do a series with us since more fans at a game means more $$. Think of it this way, in 2 weeks BU comes to RPI which will bring in more fans than any games aside from Clarkson, Cornell, Union and Freakout.
So while the rankings may "not matter" they can definitely affect the things that do matter.