Simple Maps Using GeoJSON and Tile5

I've been wanting to post about GeoJSON for a while now because I like what the standard provides in terms of simplifiying interoperability.  The thing is, GeoJSON is just a standard structure for geometry and features represented in JSON, so there isn't much for me to talk about in regard to GeoJSON itself.  So what I decided to do is see how I could utilise GeoJSON to create a very simple mapping application by simplifying communication between tiers, and highlight how JavaScript mapping libraries such as Tile5 can help you achieve your vision of simplicity.