I'm a bit surprised so many people would put real information as answer to their secret question, and I'm surprised a lot of websites offer this alternative to log in without knowing the password, it seems like a big security hole to me.
Now I associate a friend I grew up with the site and fill it out as if I was them. Now I can say "ING -> Mike" and I know which Mike and what their info is but it doesn't mean anything to anyone else.
And now that I've said this on a public forum (a little googling is all it takes to identify me) I will have to change it to something more obscure...