Most punters are suspicious of professional photos, a cheap digital camera should do the trick, there is simply no excuse for never updating profile photos ------ of course some pro$$ies want you to see pictures that were taken years ago ------ before they piled on the pounds.
Spot on Jimmy, you can buy a decent digital camera for £40 (or less) that will do the job, likewise most prossies have phones that will take a good enough picture. They're either not technically savvy enough (blurred photos, low light seem the norm) or they're too fucking lazy. A photo of a woman's ankle tells me nothing.
As mentioned a lot of it could be construed as deception, 10 year old photos are a bait and switch in my eyes even if it is the woman in the pictures.
Most of the "pro" pictures are also shit. They may have proper lighting and airbrushing, but I'm bored shitless of seeing the same backdrop of the grafitti wall and a woman posing on a motorbike - you know the ones.