 Have you ever been invited to give a presentation at a conference and wanted a way to engage other folks with your topic before, during, and even after the conference? Let me show you how easy it is to invite people to have a discussion on materials related to your presentation, right on top of the documents themselves, using Hypothesis, the free non-profit annotation service. For example, let's say there's an open access journal article, like this one, that's related to your presentation and you think it might spark off a good conversation. Just visit the article online and copy the web address, the URL, and then use the Hypothesis paste a link tool on our website to paste the article URL and open it up again. But now, as you can see, with annotation enabled in the sidebar. If you don't have a Hypothesis account yet, you can follow the signup link at the top of the sidebar to set one up for free. If you already have an account, just log in and then start the conversation by making an annotation of your own. Maybe there's a particularly juicy part of the article where you want to focus people's attention. Just highlight some text, click to annotate, and then enter your annotation. I'm going to lead off here with a question, but you can add anything you want, including links, images, or even video. Then post your annotation publicly so others can read and respond to it. Spread the word to your colleagues and conference attendees to join the discussion. Click on the share icon in any annotation to copy a link that leads directly to it and the article it's on. You can paste that link anywhere, in an email or web page or in a tweet or other social media post. You can also use the icons right above to post the link directly to a service like Twitter. Then anyone who clicks on your shared link will open the article with your annotation and can log into Hypothesis to join the discussion themselves. Try it out and see what works for you. If you have any troubles, visit the help section of the Hypothesis website or email us at support at Hypothesis.