I know that it's hard when you want a job, but personality tests should be declined the same way polygraphs should be (if they were legal to administer). Developers have an advantage right now in the supply and demand department, and this is exactly the way that power should be used.
Talented developers are in short supply in the core tech industry. Outside that, the world is filled with "programmers" and "analysts" struggling to find jobs in enterprise IT and niche-market product development. Post a job to craigslist and you'll be drowned in resumes.
My suspicion (never having seen one of these tests) is that it's being used in these situations. I doubt Apple or Google are going to start using them any time soon. My guess is your advice is pretty bad for the people facing a personality test.
