Legal Question in Technology Law in California

Re: Is a click-through EULA generalization binding?

Yes.

The essence of a contract is that it is a voluntary arrangement between parties. There are a few limits on what is called the "power to contract;" for example, a residential lease cannot contain a clause exculpating the landlord for his own negligence. This is because "public policy" finds such clauses repugnant.

However, I do not know of any jurisdiction that frowns on private agreements specifying that they are terminable at will. In fact, "at will" contracts are fairly commonplace in the business world. Think how many contractual arrangements you are involved in where you feel free to cancel or stop using the service whenever you want! As just one example, you can terminate your residential telephone service anytime.