Tom Vandaele has opened up his blog on the newly created Trycatch community site with an awesome post on sharing his growing experience on sharepoint (and FBA).
He put together a nice scenario and explains how to "reach the goals"

Situation:
You're working at a company with a bunch of freelancers. Let's say a newspaper. When a freelancer works for you, you would like to give him access to your SharePoint environment. Since you use a lot of freelancers (and not always for a long time) you don't want to put them into your Active Directory.

Continue the story on his blog and subscribe to his feed as this guy is awesome !

//Bart