After the presentation is over, consider sharing your poster. Post a copy online along with supplementary materials.
Export your poster as a JPEG or PNG file and upload to a website, blog, Facebook, Flickr, etc.
Try an online document sharing service like Slideshare.
Publish your poster in ePosters.net, an online journal of scientific posters.
An online copy of your poster may serve as a portfolio for job applications or professional reviews. When you publish your poster, consider a Creative Commons license, which facilitates sharing while protecting your copyright interests. Details at: http://creativecommons.org/choose/