PSG has a Facebook page where information on conservation, seabirds, shorebirds, oceanography, climate change, fish, international bird meetings, jobs, and both graduate and undergraduate research positions are posted. Information on PSG's annual meeting is also posted there.
Additionally, interesting scientific articles pertaining to the ocean are also occasionally posted.
You cannot leave comments publicly, but you can contact the person who manages the site (the Secretary of PSG who is myself through Feb 2015) and leave comments, or you can request to have something posted.
Here is the link: