It's generally pretty easy to spot the fake profiles: they almost always start with "I'm just a simple girl ..." and continue on with a lot of vague, generic verbiage. The text is often weirdly formatted, as if it's been copy-pasted from a template (and will usually show up on a google search if you search on a portion of it). And the profile pictures are supermodels or stock photos.
My objective is to get a date with a real live human being (although I might possibly make an exception for Number Six), so the first few lines of messaging are generally my final pass-fail test to make sure I'm communicating with a real live person instead of an algorithm.
Joys of 21st century dating.