On inspection in the web console, neither STATUS_BSON nor STATUS_JSON are quite acceptable as json:

```
STATUS_BSON: "{ \"serverUsed\" : \"ec2-54-196-193-132.compute-1.amazonaws.com/54.196.193.132:27017\", ...
STATUS_JSON: "{serverUsed=ec2-54-196-193-132.compute-1.amazonaws.com/54.196.193.132:27017, ...
```
So both are just strings of json. BSON is slightly closer in that the keys and values are properly quoted. JSON doesn't quote at all.