Yes, they have a pretty big apps showcase, but it's not enough sometimes.
Anyway, if they get acquired by Urban Airship, it will be great. UA will have a better use for their platform (and UA will need geolocation soon), and I'm happy Simplegeo will have a good use (what they built is really awesome, if you understand geolocation).
Factual provides an API for businesses in the US and around the world. In fact, SimpleGeo partnered with us for some of their data. Other alternatives you can consider are FourSquare, Google Places, etc. Each alternative has it's own pricing structure and terms and conditions.
You can browse some of our POI data by going to http://www.factual.com/topic/places
This Factual is new to me and seems good, I will see it better later (big list of places for Brazil, exactly what I need sometimes).
MongoDB has some pretty good geo-aware methods worth looking.
This is the same indexer that is powering open gov't projects around the world: http://maxogden.com/#blog/diy-open-data-catalog
Bimaple provides powerful location-based search services. Check omniplaces.com for a demonstration site that supports instant, error-tolerant search on more than 17 million business listings. Customers can build a search application easily using our product.