I’ve been doing some work on getting the private beta of Weheartplaces out. I’m using tagging as a way to categorize places, so you can quickly add a place and tag as ‘todo’, ‘cafe’ or possibly ‘avoid’.

Places tagging interface for Weheartplaces

I found tagbox by Rafudu still works okay with current jquery. It’s a bit creaky, but with some CSS tweaks it worked okay out of the box.