At a conference, should I visit other people's posters during my poster session? Usually, conferences give you between 1-2 hours to present your poster. My dilemma is that sometimes I am interested in learning about other posters during that time period. But I also have to keep next to my poster in case a referee or a potential collaborator of the conference comes and wants to learn about my topic.

So my question is what should I do? Should I stay next to my poster and try to talk to the other poster attendees afterward or should I visit their poster and risk missing out on potential important visitors to my poster?
It depends on the venue. In a small room, you can easily wander around and get back to your poster quickly if you spot someone interested. In a huge conference hall, if you abandon your poster you may never know who visited it and when.

So, if you have a large venue, ask yourself, what is your priority: to get your work out and have a chance of presenting yourself, or to check out what others are doing. Both are valid options, and both are important. It's your call how to balance them.