About: location-based check-in service

Premodifier: location-based check-in
Head noun: service

Same concepts

Broader concepts

label	provenance	confidence

Narrower concepts

label	provenance	confidence
facebook places	isap:439978443	0.668942
foursquare	isap:219946064	0.543129
gowalla	isap:430008205	0.408343