It's really easy to put together some initial data to populate your map. The program is very intuitive, you can set up templates for different types of maps. I wish it was easier to use a shapefile instead of having to use a csv file. It's nice that it supports OSM tiles rather than just using my own files; however, this adds another layer of complexity to make sure everything works properly across different browsers, etc.
For us, we're creating an interactive online GIS for our organizationβ¦