The short answer is "yes."
For the longer, more detailed and nuanced answer, you should speak to an attorney -- and not just any attorney; it's really best to go with one who is experienced and knowledgeable in laws that pertain to and regulate the adult industry, specifically.
I would also advise that people not post too much detail about what they are (or aren't) doing in order to comply with 2257. In that same spirit, it's probably best to state your questions about 2257 in hypothetical form. ("If I were to post galleries as an affiliate, would I need to....").
This might seem like paranoia-driven advice, but it's really just prudent practice when discussing anything you do that might create liability for you in any area of law, be it criminal or civil.
