Also using the trial, and I think it's a fantastic little app. It's not a full-blown CRM imo, but rather 1/3 CRM, 1/3 GTD and 1/3 project management/organization; right now I'm using it to manage appointments, research/projects, and just a general all-around organizer, and I think if you're a freelancer who doesn't need an intensive CRM app this might be a good fit.
It's a lot more useful/powerful than I thought it would be and dead easy to use. I was testing out Process for project outlining/organizing as well and it was ok, but seemed ridiculously underpowered and redundant after I opened Relationship.
Definitely promising, like the other reviewers noted. It has a lot of room to grow without being useless on its own as it is now; absolutely worth a try, and since it's on sale on the App Store for $19 (as of today, 2/19, at least), I may just bite the bullet and buy it.