mine would have to be my website - as critiqued before, i have a LOT of information on our website, from service info, to g/cs, to class schedule, to online scheduling, to nutritional info, etc. the website is the best.
coming in at a close second, though, is the enewsletter. it's so cool to be able to track who opens it, what links they click on, forward to and how many times they open it. let's me know what the favorite topics are.
i've bought the magnets but that hasn't worked for me. what's the best tool for you?