We cannot guarantee the availability of our service. There are too many variables that are out of our control for us to make such a guarantee.
That said, we will work as hard as possible to ensure that our service is up and running whenever you need it. (We also maintain a Twitter feed where we report service availability issues.)
If you are making second-by-second trading decisions, we strongly recommend that you have a backup quote service available in case you are unable to contact our site for any reason.
If a service outage does occur, we may or may not provide some form of compensation to members. Typically, compensation would be in the form of additional subscription time.