Is there a name for this kind of thing? "GIF painting" captures something about how the GIFs are being layered and composited differently from ye olde Geocities, but maybe it should be "collage" to capture the aspects of reuse.

Anyway, it's a genre that's taking off on Multiverse and on mmm.page and I find it really interesting. Please feel free to comment with any you've come across and liked; the more artistic hubris evident, the better.