We've just rolled out a minor software update for Hoop.la and UBB Forum. The biggest new feature is support for "pinning" content on Pinterest. You'll find a Pinterest "pin" button in our standard Share Bar on all content pages. (As usual, the Share Bar will only be available for content that is public.)
In addition to the support for Pinterest sharing, we also made some minor improvements to the mobile interface, added support for "transparent" to all background colors in themes, and other minor improvements/fixes.