A generous 14 with substitutes. Example #24 WOW? How about 10 top level PVE and 3 PVP Guild Wars characters?
Oh, how about +2 for using your eight fingers in binary?
Quote from the article: "The ESTA applications collect the same information as the I-94W form"
So, how long has this I-94W form been around? Now that there is a possible link to the database from the net I would be more concerned with tampering of it than the ethics of the form itself...