Welcome to the boards!
I understand the feeling, it's something I felt when I first started
with yukkuris as well. I remember waking up randomly in the middle of
the night to check the futaba in fear of missing some ongoing series
of my favorite artists, most of whom have since retired. The thread
in futaba also flows much slower now, so there's less chance of a
bunch of stuff disappearing in the middle of the night.
OYP is indeed the largest yukkuri community outside of Japan.
Discussion was hard there (with wall of text bumps) but under the new
danbooru format the wall is no longer an issue. You can track
comments and follow individual discussion threads, it's actually not
too bad for an actual discussion. Most of the zealots (on both abuse
and FF side) have since died down or went away as well, and it's now a
much nicer place than it was originally!
There are 2 other communities, though they are veritable ghost
towns.
a family friendly only board:
http://yukkuri.booru.org/index.php
and an abuse only board.
http://abyuse.booru.org/index.php
You'll also find Family friendly or abuse related threads on
pooshlmer.
Like Hourai said, the only other regular community is the japanese one
on Futaba and the Anko tracker. And If you don't understand
moonspeak, it'll be hard to go through. :)