I put in a totally bogus email address and a password and handle I thought up on the spot, and 90210 for the zipcode, as heric suggested, and it was enough to not only get me in, but also to log out and log in again later.

That one must be one of the best known postcodes in the US, so I bet they get a lot of them. I really doubt whether the zipcode is counted as part of their calculations. I suppose if I was sufficiently curious, I could log in as a new identity with a different zipcode but with the same answers, just as an experiment. Probably won't bother though.

I rather like the handle and password I came up with - maybe I'll even use them somewhere else in the future!

Now I feel a little bit mean, because I think there is actually some quite good information there - some food for thought in fact. I could easily get into the 90's with a few changes - close to 100 if I do things properly. This only confirms what a naturopath / iridologist told me years ago when I first went to her. She said my eyes showed a very strong constitution - from good family stock, and that if I looked after myself properly, I could reach 100. So it's really up to me, if I want to take it seriously. I really would like to live to a ripe old age!