I disagree. Were it to become a problem, it would be trivial to deal with an application flood. Among many options, provide a unique 'application key' on the i

I disagree. Were it to become a problem, it would be trivial to deal with an application flood. Among many options, provide a unique 'application key' on the instructions page which expires after first use. If you're really concerned, or it becomes a problem, just add a Captcha-like requirement to get your application key. Besides, as asveikau points out, the risk is no different than any other application acceptance system. Take applications by mail? Fine, I'll buy a roll of stamps and make a few stops to the post office.