I just found this cool (mostly free) tool that helps you pull a dynamic photo feed from Twitter, Instagram, and/or Facebook. If you use their Pro version, it also includes custom CSS and moderation tools.
You can paste their embed code into custom content blocks or custom widgets, or into the header or footer of your Hoop.la site. Options include scrolling banners, grids, and map style.
If you decide to try it out, come back and share your design!