Hope you can help. We have set up a single property under our Google Analytics account. That property's default URL is set to subdomain1.example.com.

We would now like to track multiple subdomains for example.com, under the same property. Seems easy enough: we just need to add

_gaq.push(['_setDomainName', 'example.com']); 

to our tracking code, right?

But my question is: does it matter if a) we don't need to track www.example.com (this is tracked under a seperate account and property) and b) the default URL for our property is set to subdomain1.example.com? Will either of these have any impact on data collection?