It depends how much your chasing. The problem with small debts is that you can't recover the costs incurred bringing them to court. If you get them into court you've still got to get them to pay!
It's been said before, but if you're robbed by people, it's your own fault for doing buisness with them in the first place. Yep I've got the Tee shirt, and I've learned a lesson or two. I'm still chasing £300 from a customer from last October. If she doesn't pay up I shall just write it off. Lifes too short and all that.