I am the founder of PayPerPost.com and I am currently trying to determine which tradeshows to exhbit at this year. If I was to market to the people on this site which tradeshows should I exhibit at? I have my ideas but I want to see if I am missing some.
I'd go to Direct Marketing and Advertising type tradeshows. Also SES etc. Many members here at DP use services such as yours, I'd stick it in my signature if I were you, you could well see a lot of business coming from it.