Do you have features that you could be charging for? If the answer is yes then you should probably be charging for them. If you haven't read "Getting Real" by

Do you have features that you could be charging for? If the answer is yes then you should probably be charging for them. If you haven't read "Getting Real" by 37signals, it might be worth your time to spend an hour or two reading it. 37signals are big advocates of charging ASAP, and it seems to have worked out pretty well for them.