Geofli is doing something interesting, beyond just geofencing a site’s marketing they offer geofenced web content. Geofencing is a relatively new means to target an audience and in this emerging industry few companies specialize on more than adverting. Geofli can help clients serve a tailored site depending upon where they are viewing.
This is the parent site of UltimateSEO.org, Cloud502.com and Data502.com all offering services through Upwork.