Sfner

Judging by the amount of sites I visited and that I took more than 2 hours to visit them all, at least one mistake was already expected. Thank you for the correction.

I remember seeing you somewhere else other than here... anyways, directly answering your question, from the ones marked as \"active\" in AnOtherWiki:
--- Most likely you may find to be active ---
www.kinmunity.com {otherkin}
www.draconity.org {dragonkin and dragonhearted}
dreamhart.org/forum {otherkin}
www.werelist.net {therian; some otherkin can be found there} {few posts per week}
machinekin.bbforum.co {machinekin}
www.otherkin-hispano.org/forum {otherkin} {spanish-only}
fictionkin.com/forum {fictionkin}
werecat.proboards.com {therian} {christian}
therian-wilderness.proboards.com {therian}
www.castleotherkin.com {otherkin}
forums.therian-guide.com {therian; few otherkin can be found there}
wingedones.webs.com {otherkin} {contains p-shifting stuff}
--- Unknown ---
www.kitsuhana.org {otherkin} {boards are completely private; unknown if active or not}
kintastic.mixxt.com {otherkin} {boards are completely private; unknown if active or not}
www.draconic.com {draconic} {boards are completely private; unknown if active or not}
forum.otherkinphenomena.org {otherkin} {boards are mostly private; unknown if active or not}
werebeastcommunity.proboards.com {therian} {boards are mostly private; unknown if active or not}
--- You don\'t know if you reached the abandoned sites ---
smokeandmirrors34981.yuku.com {otherkin} {seems not frequently used}
kinside.forumer.com {otherkin} {seems not frequently used / seems abandoned}
gryphonguild.yuku.com {gryphons} {seems not frequently used / seems abandoned}
--- Line of the limbo ---
the-otherkin-haven.boards.net {otherkin} {seems abandoned}
thenonhumansoul.boards.net {otherkin} {seems abandoned}
kin-united.proboards.com {otherkin} {seems abandoned}
www.embracingmystery.org {otherkin & metaphysical} {seems abandoned}
otherkinsanctuary.forumotion.com {otherkin} {seems abandoned}
otherkin-life.boards.net/forum {otherkin} {seems abandoned}
otherkinarcanum.proboards.com/forum {otherkin} {seems abandoned}
werebeastcommunity.proboards.com {were} {seems abandoned}
christianotherkin.proboards.com {otherkin} {christian} {seems abandoned}
10501628.weebly.talkiforum.com {fictionkin} {seems abandoned}
elenerinlhorn.digibase.ca/index.php {elvenkind} {seems abandoned}
theriantree.proboards.com {therian} {seems abandoned}
therian-skies.proboards.com {therian} {seems abandoned}
z13.invisionfree.com/genusequus/index.php {equine otherkin} {seems abandoned}
feathersblood.proboards.com {unknown: hard to read}