I will be doing a bunch of things to give one of my projects (main app) a big initial push for which I will be building a few small Facebook apps which will help in promoting the main apps. Traffic from these apps need to be tracked individually.

My main app will be posting on the walls when the user needs to be notified. Traffic from these posts need to be tracked.

Traffic from emails sent by the main app need to be tracked, like different types of email.

I need to track all of these & possibly a couple of more but I need to be sure that I build my campaign URLs correctly as I won't get another chance to fix it.

Correct me where I am wrong:

Campaign Name: Launch
Campaign Medium: Email
Campaign Source: Type1 or Type2 (I can break it down for different types of email, right?)

For apps:

Campaign Name: Launch
Campaign Medium: Apps
Campaign Source: App1 or App2 (I can break it down here for different apps, right?)

What if I want to track two different links within a single email or a single app? Any way of tracking them individually too but still keeping to track them as one because tracking them as one makes more sense for me.

Campaign Term & Campaign content is irrelevant in my case, or I can/should use them for something?

And I will also be tracking traffic of different apps. Should I do more?

Let me know if my scenario wasn't clear enough & I need to explain more.