It would be great if there was some kind of flood control when forms are submitted. We are currently seeing duplicate form submissions from people who repeatedly re-submit a form. As we record campaign responses and create phone call activities on each sumbission, not only are the marketing stats skewed but duplicate oubound calls get created against the contact or lead. This makes sales people very unhappy!
If there was a setting that could be enabled per field on a form for flood control that would prevent the form being resumbitted. If per field is too dificult, then per form would also work.
Ideally though you would be able to say that, unless a value in a given field changed, a resubmission would not be allowed for xx seconds. This would cater for those who realised they had made an error.