I did a search within 75 miles of my zip and on page 1 8 of 15 profiles were FAKE... probably a few more were fake also but just not auto generated.
The fakes hit the POF airwaves in groups. Hard to say exactly how many pop up at one time, but I'd venture to say 12-15 in a specific city at one time isn't too much of a stretch. It's not every hour 24/7, but these groups of auto/fake profiles may pop up in groups a few times a day. Like I said before, wait an hour or so and see if they are still there.
I have noticed a few profile pics re-appearing again after several months, but it's pretty rare, and since the amount of photos that can be stolen/borrowed from social media profiles off the internet is nearly infinite, I don't think using optical search scans is really effective to police this kind of thing.
Using those human-verification things like CAPTCHA and being told to find all the road signs or fire hydrants would probably cut down the auto script spamming, but how many people would want to do that every single time they open the App? People have absolutely Zero patience - even if it for their own safety. There are still idiots who drive with no seat belts, even though there is about half a century of data proving it's the smart thing to do. Changing the masses is a helluva lot harder than changing your own tolerances.