diff --git a/docs/supportedsites.rst b/docs/supportedsites.rst
index 42baadb4..9d4d6e66 100644
--- a/docs/supportedsites.rst
+++ b/docs/supportedsites.rst
@@ -7,6 +7,7 @@ Site                 URL                                 Capabilities
 4chan                https://www.4chan.org/              Threads
 4plebs               https://archive.4plebs.org/         Threads
 8chan                https://8ch.net/                    Threads
+arch.b4k.co          https://arch.b4k.co/                Threads
 Archive of Sins      https://archiveofsins.com/          Threads
 Archived.Moe         https://archived.moe/               Threads
 Batoto               https://bato.to/                    Chapters, Manga                                    Optional
@@ -73,6 +74,7 @@ Twitter              https://twitter.com/                Tweets
 Warosu               https://warosu.org/                 Threads
 World Three          http://www.slide.world-three.org/   Chapters, Manga
 Yandere              https://yande.re/                   Pools, Popular Images, Posts, Tag-Searches
+YEET Archive         https://archive.yeet.net/           Threads
 Acidimg              https://acidimg.cc/                 individual Images
 Chronos              http://chronos.to/                  individual Images
 Coreimg              http://coreimg.net/                 individual Images
diff --git a/gallery_dl/extractor/__init__.py b/gallery_dl/extractor/__init__.py
index 75573a05..5b6ef855 100644
--- a/gallery_dl/extractor/__init__.py
+++ b/gallery_dl/extractor/__init__.py
@@ -18,6 +18,7 @@ modules = [
     "8chan",
     "archivedmoe",
     "archiveofsins",
+    "b4k",
     "batoto",
     "danbooru",
     "desuarchive",
@@ -78,8 +79,10 @@ modules = [
     "tumblr",
     "twitter",
     "warosu",
+    "whatisthisimnotgoodwithcomputers",
     "worldthree",
     "yandere",
+    "yeet",
     "imagehosts",
     "directlink",
     "recursive",
diff --git a/gallery_dl/extractor/b4k.py b/gallery_dl/extractor/b4k.py
new file mode 100644
index 00000000..a669f221
--- /dev/null
+++ b/gallery_dl/extractor/b4k.py
@@ -0,0 +1,24 @@
+# -*- coding: utf-8 -*-
+
+# Copyright 2017 Mike Fährmann
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 as
+# published by the Free Software Foundation.
+
+"""Extract images from https://arch.b4k.co/"""
+
+from . import chan
+
+
+class BfourkThreadExtractor(chan.FoolfuukaThreadExtractor):
+    """Extractor for images from threads on arch.b4k.co"""
+    category = "b4k"
+    root = "https://arch.b4k.co"
+    pattern = [r"(?:https?://)?arch\.b4k\.co/([^/]+)/thread/(\d+)"]
+    test = [("http://arch.b4k.co/meta/thread/196/", {
+        "url": "cdd4931ac1cd00264b0b54e2e3b0d8f6ae48957e",
+    })]
+
+    def remote(self, media):
+        return media["remote_media_link"]
diff --git a/gallery_dl/extractor/chan.py b/gallery_dl/extractor/chan.py
index ae38a9f3..18e326a1 100644
--- a/gallery_dl/extractor/chan.py
+++ b/gallery_dl/extractor/chan.py
@@ -70,12 +70,14 @@ class FoolfuukaThreadExtractor(SharedConfigExtractor):
                      "{thread_num} - {title}"]
     filename_fmt = "{media[media]}"
     root = ""
+    referer = True
 
     def __init__(self, match):
         SharedConfigExtractor.__init__(self)
         self.board, self.thread = match.groups()
         self.session.headers["User-Agent"] = "Mozilla 5.0"
-        self.session.headers["Referer"] = self.root
+        if self.referer:
+            self.session.headers["Referer"] = self.root
 
     def items(self):
         op = True
@@ -91,9 +93,9 @@ class FoolfuukaThreadExtractor(SharedConfigExtractor):
             url = media["media_link"]
 
             if not url and "remote_media_link" in media:
-                needle = '<meta http-equiv="Refresh" content="0; url='
-                page = self.request(media["remote_media_link"]).text
-                url = text.extract(page, needle, '"')[0]
+                url = self.remote(media)
+            if url.startswith("/"):
+                url = self.root + url
 
             post["extension"] = url.rpartition(".")[2]
             yield Message.Url, url, post
@@ -104,7 +106,12 @@ class FoolfuukaThreadExtractor(SharedConfigExtractor):
         data = self.request(url, params=params).json()[self.thread]
 
         # sort post-objects by their key
-        posts = sorted(data["posts"].items(), key=operator.itemgetter(0))
+        posts = sorted(data.get("posts", {}).items())
         posts = map(operator.itemgetter(1), posts)
 
         return itertools.chain((data["op"],), posts)
+
+    def remote(self, media):
+        needle = '<meta http-equiv="Refresh" content="0; url='
+        page = self.request(media["remote_media_link"]).text
+        return text.extract(page, needle, '"')[0]
diff --git a/gallery_dl/extractor/whatisthisimnotgoodwithcomputers.py b/gallery_dl/extractor/whatisthisimnotgoodwithcomputers.py
new file mode 100644
index 00000000..3b6ca152
--- /dev/null
+++ b/gallery_dl/extractor/whatisthisimnotgoodwithcomputers.py
@@ -0,0 +1,23 @@
+# -*- coding: utf-8 -*-
+
+# Copyright 2017 Mike Fährmann
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 as
+# published by the Free Software Foundation.
+
+"""Extract images from https://archive.whatisthisimnotgoodwithcomputers.com"""
+
+from . import chan
+
+
+class WitingwcThreadExtractor(chan.FoolfuukaThreadExtractor):
+    """Extractor for archive.whatisthisimnotgoodwithcomputers.com"""
+    category = "whatisthisimnotgoodwithcomputers"
+    root = "https://archive.whatisthisimnotgoodwithcomputers.com"
+    pattern = [r"(?:https?://)?archive\.whatisthisimnotgoodwithcomputers\.com/"
+               r"([^/]+)/thread/(\d+)"]
+    test = [(("https://archive.whatisthisimnotgoodwithcomputers.com/"
+              "ref/thread/1094/"), {
+        "url": "cf8f6d4b4950767d2131de308ebc96eec05b04f6",
+    })]
diff --git a/gallery_dl/extractor/yeet.py b/gallery_dl/extractor/yeet.py
new file mode 100644
index 00000000..ed238380
--- /dev/null
+++ b/gallery_dl/extractor/yeet.py
@@ -0,0 +1,22 @@
+# -*- coding: utf-8 -*-
+
+# Copyright 2017 Mike Fährmann
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 as
+# published by the Free Software Foundation.
+
+"""Extract images from https://archive.yeet.net/"""
+
+from . import chan
+
+
+class YeetThreadExtractor(chan.FoolfuukaThreadExtractor):
+    """Extractor for images from threads on archive.yeet.net"""
+    category = "yeet"
+    root = "https://archive.yeet.net"
+    pattern = [r"(?:https?://)?archive\.yeet\.net/([^/]+)/thread/(\d+)"]
+    test = [("https://archive.yeet.net/yeet/thread/359/", {
+        "url": "ced64a1aadaafc4f359ab89d9f801050731803f1",
+    })]
+    referer = False
diff --git a/scripts/build_supportedsites.py b/scripts/build_supportedsites.py
index 5dcd4f3a..1e27fe6c 100755
--- a/scripts/build_supportedsites.py
+++ b/scripts/build_supportedsites.py
@@ -12,6 +12,7 @@ CATEGORY_MAP = {
     "2chan"          : "Futaba Channel",
     "archivedmoe"    : "Archived.Moe",
     "archiveofsins"  : "Archive of Sins",
+    "b4k"            : "arch.b4k.co",
     "deviantart"     : "DeviantArt",
     "dokireader"     : "Doki Reader",
     "dynastyscans"   : "Dynasty Reader",
@@ -54,6 +55,7 @@ CATEGORY_MAP = {
     "spectrumnexus"  : "Spectrum Nexus",
     "thebarchive"    : "The /b/ Archive",
     "worldthree"     : "World Three",
+    "yeet"           : "YEET Archive",
     "yomanga"        : "YoManga",
     "yonkouprod"     : "Yonkou Productions",
 }
@@ -85,6 +87,7 @@ AUTH_MAP = {
 
 IGNORE_LIST = (
     "oauth",
+    "whatisthisimnotgoodwithcomputers",
 )