How do you manage your service contracts? The majority of the work (web design and hosting) that I have done to date has been sent to me through the company I used to work for (stuff that is too small for them to bother with). For that reason I almost without fail meet with the person and we sign the contract there and then.

But what about when it's all online? What is considered a legally binding acceptance of a contract-is clicking an "I accept" button enough?