Hey Chimmy,
In my opinion, if I am right and this only affects us-based or us-hosted websites, then I feel that 2257 would work as you have explained.
Any adult dtaing company in the US would be forced to ask their members for valid ID verification before allowing any image uploaded by them to appear on the site. This would, obviously, affect conversions on many sites.
As DatingGold said though, because it is user-submitted, their may be different laws surrounding this. At present, it may not be the site's liability due to that fact, though I would assume 2257-pushers will try to go after those sites and change that ruling
As for lack of replies, you can see it two ways:
One, they don't have a proper answer approved by "legal" to give you, or Two, they just want to avoid this issue until the last possible moment....again, just my humble thoughts
