Fetlife

Fetlife bills it's self as the #1 walled garden social network for people in the BDSM/kink/fetish community.

Their security sucks, and the site is easily crawlable and it's content somewhat archiveable.

Grabbing someone elses images

Use fetscrape it's easy to set up, but is currently being worked on.

Grabbing someone elses videos

Theres a site that does this and you don't need to pay to get access.

Exporting your own Fetlife

MayMay has done a ton of great work with regard to FL, but there's others building on what maymay did

Maymays tool