diff --git a/__init__.py b/__init__.py
index 3758ca1..9c24939 100644
--- a/__init__.py
+++ b/__init__.py
@@ -41,11 +41,14 @@ class SocialSiteId(enum.Enum):
     VIMEO_CHANNEL = 27
     NEWGROUNDS_PAGE = 28
     ARTSY_ARTIST = 2042
+    ARTNET_ARTIST = 3782
     LINK_COLLECTION_PAGE = 29
     DEVIANT_ART_ACCOUNT = 7737
     DANBOORU_ARTIST = 30
     BANDCAMP_PROFILE = 3283
     BLUESKY_PROFILE = 32
+    ITCH_IO_DEVELOPER = 8176
+    FIREFOX_PROFILE_BOOKMARKS = 33
 
     def wikidata_property(self, client):
         return client.get(WIKIDATA_PROPERTIES[self])
@@ -109,10 +112,12 @@ WIKIDATA_PROPERTIES = {
     SocialSiteId.VIMEO_CHANNEL: WikidataInfo(4015, 156376),
     SocialSiteId.NEWGROUNDS_PAGE: WikidataInfo(None, 263655),
     SocialSiteId.ARTSY_ARTIST: WikidataInfo(2042, 4796642),
+    SocialSiteId.ARTNET_ARTIST: WikidataInfo(3782, 266566),
     SocialSiteId.DEVIANT_ART_ACCOUNT: WikidataInfo(7737, None),
     SocialSiteId.DANBOORU_ARTIST: WikidataInfo(None, 64514853),
     SocialSiteId.BANDCAMP_PROFILE: WikidataInfo(3283, 545966),
     SocialSiteId.BLUESKY_PROFILE: WikidataInfo(None, 78194383),
+    SocialSiteId.ITCH_IO_DEVELOPER: WikidataInfo(8176, 22905933),
 }
 
 def re_social_subdomain(main_domain):
@@ -143,7 +148,8 @@ MAILTO_URL = r'^mailto:(?:[\w._.]+@[\w._.]+)$'
 
 REDDIT_SUBREDDIT_URL = r'^(?:https?:\/\/)?(?:old\.)?reddit\.com\/r\/([\w-]+)\/?$'
 REDDIT_USER_URL = r'^(?:https?:\/\/)?(?:old\.)?reddit\.com\/user\/([\w-]+)(?:|\/submitted)\/?$'
-TWITTER_HANDLE_URL =re_social_path('twitter.com')
+TWITTER_HANDLE_URL_1 =re_social_path('twitter.com')
+TWITTER_HANDLE_URL_2 =re_social_path('x.com')
 LINKTREE_PAGE_URL = re_social_path('linktr.ee')
 TWITCH_STREAM_URL = re_social_path('twitch.tv')
 WIKIDATA_ITEM_URL = re_social_path_adv('wikidata.org', 'wiki', RE_ID)
@@ -172,12 +178,14 @@ URL_PARSE_YOUTUBE_CHANNEL_HANDLE_2= re_social_path_adv('youtube.com', 'c', RE_ID
 URL_PARSE_YOUTUBE_CHANNEL_ID= re_social_path_adv('youtube.com', 'channel', RE_ID)
 URL_PARSE_VIMEO_CHANNEL= re_social_path_adv('vimeo.com', RE_ID)
 URL_PARSE_NEWGROUNDS_PAGE = re_social_subdomain('newgrounds.com')
-URL_PARSE_ARTSY_ARTIST = re_social_path_adv('artsy.net', 'artist', RE_ID)
+URL_PARSE_ARTSY_ARTIST = re_social_path_adv('artsy.net', 'artist', RE_ID, RE_ANY_SUBPATH)
+URL_PARSE_ARTNET_ARTIST = re_social_path_adv('artnet.com', 'artists', RE_ID, RE_ANY_SUBPATH)
 URL_PARSE_DEVIANT_ART_ACCOUNT = re_social_path_adv('deviantart.com', RE_ID)
 URL_PARSE_DEVIANT_ART_ACCOUNT_2 = re_social_subdomain('deviantart.com')
 URL_PARSE_DANBOORU_ARTIST = re_social_path_adv('danbooru.donmai.us', 'artists', RE_ID)
 URL_PARSE_BANDCAMP = re_social_subdomain('bandcamp.com')
 URL_PARSE_BLUESKY = re_social_path_adv('bsky.app', 'profile', RE_ID)
+URL_PARSE_ITCH_IO_DEVELOPER = re_social_subdomain('itch.io')
 
 REGEXES = [
     # Reddit
@@ -185,7 +193,8 @@ REGEXES = [
     (REDDIT_USER_URL, SocialSiteId.REDDIT_USER),
 
     # Twitter
-    (TWITTER_HANDLE_URL, SocialSiteId.TWITTER),
+    (TWITTER_HANDLE_URL_1, SocialSiteId.TWITTER),
+    (TWITTER_HANDLE_URL_2, SocialSiteId.TWITTER),
 
     # Facebook
     (FACEBOOK_PAGE_URL, SocialSiteId.FACEBOOK_PAGE),
@@ -263,6 +272,7 @@ REGEXES = [
 
     # Artsy
     (URL_PARSE_ARTSY_ARTIST, SocialSiteId.ARTSY_ARTIST),
+    (URL_PARSE_ARTNET_ARTIST, SocialSiteId.ARTNET_ARTIST),
 
     # Deviant art
     (URL_PARSE_DEVIANT_ART_ACCOUNT, SocialSiteId.DEVIANT_ART_ACCOUNT),
@@ -276,13 +286,16 @@ REGEXES = [
 
     # Bluesky
     (URL_PARSE_BLUESKY, SocialSiteId.BLUESKY_PROFILE),
+
+    # Itch.io
+    (URL_PARSE_ITCH_IO_DEVELOPER, SocialSiteId.ITCH_IO_DEVELOPER),
 ]
 
 WELL_KNOWN_MASTODON_INSTANCES = frozenset({
     # Includes all servers with 50 000+ users as of 6 july 2023.
     # based on https://mastodonservers.net/servers/top
     'mastodon.social',
-    'pawoo.net',
+    #'pawoo.net',
     'baraag.net',
     'mstdn.jp',
     'mastodon.cloud',