When visiting the website, are you also going to the COMMUNITY section of the site?
This area has an "activity stream" of what's been happening on the website. You can also comment on these activities. In addition, users can upload photos, and videos here, as well as schedule an event. You can also join (or create) a specialized user group with similar interests. These groups also have their own, smaller community to discuss topics and share photos. The COMMUNITY section of the website is like a mini-Facebook for this website.
Check it out! Click on the COMMUNITY option on the top menu.