We’ve just launched a Google Group for Historypin users and welcome you to join. This is a place to talk with other users, ask questions of the user community, etc. Historypin staff will use the list as well to give you first notice of upcoming site changes and upgrades, and help out with questions. Just to block spam, the group login requires you to confirm your Historypin username.
Feel free to subscribe at http://groups.google.com/group/historypin.