diff --git a/sundown/autolink.c b/sundown/autolink.c
index 697de42..a67e6ca 100644
--- a/sundown/autolink.c
+++ b/sundown/autolink.c
@@ -26,12 +26,26 @@
 #define strncasecmp	_strnicmp
 #endif
 
+static int
+ismentionchar(char c)
+{
+	return isalnum(c) || c == '_' || c == '-' || c == '+' || c == '/' || c == '=';
+}
+
+static int
+ishashtagend(char c)
+{
+	return isspace(c) || c == '(' || c == ')' || c == '[' || c == ']' ||
+		c == ',' || c == '.' || c == '"';
+}
+
 int
 sd_autolink_issafe(const uint8_t *link, size_t link_len)
 {
-	static const size_t valid_uris_count = 8;
+	static const size_t valid_uris_count = 12;
 	static const char *valid_uris[] = {
 		"§",
+		"@", "&", "%", "#",
 		"gemini://", "gopher://",
 		"/", "http://", "https://", "ftp://", "mailto:"
 	};
@@ -329,3 +343,46 @@ sd_autolink__zet(
 
 	return link_end;
 }
+
+size_t
+sd_autolink__ssb(
+	size_t *rewind_p,
+	struct buf *link,
+	uint8_t *data,
+	size_t max_rewind,
+	size_t size,
+	unsigned int flags)
+{
+	size_t link_end = 1, rewind = 0, domain_len;
+	char sigil = data[0];
+
+	if (sigil == '#') {
+		while (link_end < size && isdigit(data[link_end]))
+			link_end++;
+
+		if (link_end < size && (isspace(data[link_end]) ||
+			ispunct(data[link_end])))
+			return 0;
+
+		while (link_end < size && !ishashtagend(data[link_end]))
+			link_end++;
+
+	} else {
+		if (sigil != '%' && sigil != '@' && sigil != '&')
+			return 0;
+
+		while (link_end < size && (ismentionchar(data[link_end]) || data[link_end] == '.'))
+			link_end++;
+
+		if (ispunct(data[link_end-1]))
+			link_end--;
+
+		if (link_end < 2)
+			return 0;
+	}
+
+	bufput(link, data - rewind, link_end + rewind);
+	*rewind_p = rewind;
+
+	return link_end;
+}
diff --git a/sundown/autolink.h b/sundown/autolink.h
index 8593659..94a254b 100644
--- a/sundown/autolink.h
+++ b/sundown/autolink.h
@@ -46,6 +46,10 @@ size_t
 sd_autolink__zet(size_t *rewind_p, struct buf *link,
 	uint8_t *data, size_t offset, size_t size, unsigned int flags);
 
+size_t
+sd_autolink__ssb(size_t *rewind_p, struct buf *link,
+	uint8_t *data, size_t offset, size_t size, unsigned int flags);
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/sundown/markdown.c b/sundown/markdown.c
index f40aaee..81aab21 100644
--- a/sundown/markdown.c
+++ b/sundown/markdown.c
@@ -71,7 +71,9 @@ static size_t char_entity(struct buf *ob, struct sd_markdown *rndr, uint8_t *dat
 static size_t char_langle_tag(struct buf *ob, struct sd_markdown *rndr, uint8_t *data, size_t offset, size_t size);
 static size_t char_autolink_url(struct buf *ob, struct sd_markdown *rndr, uint8_t *data, size_t offset, size_t size);
 static size_t char_autolink_email(struct buf *ob, struct sd_markdown *rndr, uint8_t *data, size_t offset, size_t size);
+static size_t char_autolink_at(struct buf *ob, struct sd_markdown *rndr, uint8_t *data, size_t offset, size_t size);
 static size_t char_autolink_www(struct buf *ob, struct sd_markdown *rndr, uint8_t *data, size_t offset, size_t size);
+static size_t char_autolink_ssb(struct buf *ob, struct sd_markdown *rndr, uint8_t *data, size_t offset, size_t size);
 static size_t char_autolink_zet(struct buf *ob, struct sd_markdown *rndr, uint8_t *data, size_t offset, size_t size);
 static size_t char_link(struct buf *ob, struct sd_markdown *rndr, uint8_t *data, size_t offset, size_t size);
 static size_t char_superscript(struct buf *ob, struct sd_markdown *rndr, uint8_t *data, size_t offset, size_t size);
@@ -86,8 +88,9 @@ enum markdown_char_t {
 	MD_CHAR_ESCAPE,
 	MD_CHAR_ENTITITY,
 	MD_CHAR_AUTOLINK_URL,
-	MD_CHAR_AUTOLINK_EMAIL,
+	MD_CHAR_AUTOLINK_AT,
 	MD_CHAR_AUTOLINK_WWW,
+	MD_CHAR_AUTOLINK_SSB,
 	MD_CHAR_AUTOLINK_ZET,
 	MD_CHAR_SUPERSCRIPT,
 };
@@ -102,8 +105,9 @@ static char_trigger markdown_char_ptrs[] = {
 	&char_escape,
 	&char_entity,
 	&char_autolink_url,
-	&char_autolink_email,
+	&char_autolink_at,
 	&char_autolink_www,
+	&char_autolink_ssb,
 	&char_autolink_zet,
 	&char_superscript,
 };
@@ -817,6 +821,17 @@ char_autolink_email(struct buf *ob, struct sd_markdown *rndr, uint8_t *data, siz
 	return link_len;
 }
 
+static size_t
+char_autolink_at(struct buf *ob, struct sd_markdown *rndr, uint8_t *data, size_t offset, size_t size)
+{
+	size_t link_len;
+
+	link_len = char_autolink_ssb(ob, rndr, data, offset, size);
+	if (link_len) return link_len;
+
+	return char_autolink_email(ob, rndr, data, offset, size);
+}
+
 static size_t
 char_autolink_url(struct buf *ob, struct sd_markdown *rndr, uint8_t *data, size_t offset, size_t size)
 {
@@ -837,6 +852,26 @@ char_autolink_url(struct buf *ob, struct sd_markdown *rndr, uint8_t *data, size_
 	return link_len;
 }
 
+static size_t
+char_autolink_ssb(struct buf *ob, struct sd_markdown *rndr, uint8_t *data, size_t offset, size_t size)
+{
+	struct buf *link;
+	size_t link_len, rewind;
+
+	if (!rndr->cb.autolink || rndr->in_link_body)
+		return 0;
+
+	link = rndr_newbuf(rndr, BUFFER_SPAN);
+
+	if ((link_len = sd_autolink__ssb(&rewind, link, data, offset, size, 0)) > 0) {
+		ob->size -= rewind;
+		rndr->cb.autolink(ob, link, MKDA_SSB, rndr->opaque);
+	}
+
+	rndr_popbuf(rndr, BUFFER_SPAN);
+	return link_len;
+}
+
 static size_t
 char_autolink_zet(struct buf *ob, struct sd_markdown *rndr, uint8_t *data, size_t offset, size_t size)
 {
@@ -2457,8 +2492,11 @@ sd_markdown_new(
 
 	if (extensions & MKDEXT_AUTOLINK) {
 		md->active_char[':'] = MD_CHAR_AUTOLINK_URL;
-		md->active_char['@'] = MD_CHAR_AUTOLINK_EMAIL;
+		md->active_char['@'] = MD_CHAR_AUTOLINK_AT;
 		md->active_char['w'] = MD_CHAR_AUTOLINK_WWW;
+		md->active_char['%'] = MD_CHAR_AUTOLINK_SSB;
+		md->active_char['&'] = MD_CHAR_AUTOLINK_SSB;
+		md->active_char['#'] = MD_CHAR_AUTOLINK_SSB;
 		md->active_char[194] = MD_CHAR_AUTOLINK_ZET;
 	}
 
diff --git a/sundown/markdown.h b/sundown/markdown.h
index 6e280d9..e7c8e6d 100644
--- a/sundown/markdown.h
+++ b/sundown/markdown.h
@@ -40,7 +40,8 @@ enum mkd_autolink {
 	MKDA_NOT_AUTOLINK,	/* used internally when it is not an autolink*/
 	MKDA_NORMAL,		/* normal http/http/ftp/mailto/etc link */
 	MKDA_EMAIL,			/* e-mail link without explit mailto: */
-	MKDA_ZET,			  /* zet link */
+	MKDA_SSB,			/* ssb link */
+	MKDA_ZET,			/* zet link */
 };
 
 enum mkd_tableflags {
diff --git a/zet.dpi.c b/zet.dpi.c
index 8d206d4..c548941 100644
--- a/zet.dpi.c
+++ b/zet.dpi.c
@@ -27,6 +27,9 @@
 static const size_t sigil_size = sizeof("§")-1;
 static const int id_length = 16;
 
+static const char ssb_ref_base[] = "http://localhost:8027/";
+static const char ssb_channel_base[] = "http://localhost:8027/channel/";
+
 static const int max_cols = 40;
 
 static char server_hostname[256];
@@ -473,7 +476,14 @@ md_rndr_link(struct buf *ob, const struct buf *link, const struct buf *title, co
 		if (!strncmp((char *)link->data, "§", sigil_size))
 			houdini_escape_href(ob, link->data + sigil_size,
 					link->size - sigil_size);
-		else
+		if (link->data[0] == '#') {
+			BUFPUTSL(ob, ssb_channel_base);
+			houdini_escape_href(ob, link->data + 1, link->size - 1);
+		} else if (link->data[0] == '#' || link->data[0] == '@'
+		  || link->data[0] == '&' || link->data[0] == '%') {
+			BUFPUTSL(ob, ssb_ref_base);
+			houdini_escape_href(ob, link->data, link->size);
+		} else
 			houdini_escape_href(ob, link->data, link->size);
 	}
 
@@ -495,12 +505,13 @@ md_rndr_link(struct buf *ob, const struct buf *link, const struct buf *title, co
 	return 1;
 }
 
-static void put_link_truncated(struct buf *ob, const struct buf *link) {
-	if (link->size < max_cols) {
-		return houdini_escape_html0(ob, link->data, link->size, 0);
+static void put_link_truncated(struct buf *ob, const struct buf *link, int max_length) {
+	if (link->size > max_length) {
+		houdini_escape_html0(ob, link->data, max_length, 0);
+		BUFPUTSL(ob, "…");
+	} else {
+		houdini_escape_html0(ob, link->data, link->size, 0);
 	}
-	houdini_escape_html0(ob, link->data, max_cols, 0);
-	BUFPUTSL(ob, "…");
 }
 
 static int
@@ -521,7 +532,15 @@ md_rndr_autolink(struct buf *ob, const struct buf *link, enum mkd_autolink type,
 		BUFPUTSL(ob, "mailto:");
 	if (type == MKDA_ZET)
 		houdini_escape_href(ob, link->data + sigil_size, link->size - sigil_size);
-	else
+	else if (type == MKDA_SSB) {
+		if (link->data[0] == '#') {
+			BUFPUTSL(ob, ssb_channel_base);
+			houdini_escape_href(ob, link->data + 1, link->size - 1);
+		} else {
+			BUFPUTSL(ob, ssb_ref_base);
+			houdini_escape_href(ob, link->data, link->size);
+		}
+	} else
 		houdini_escape_href(ob, link->data, link->size);
 
 	if (type == MKDA_ZET) {
@@ -548,8 +567,10 @@ md_rndr_autolink(struct buf *ob, const struct buf *link, enum mkd_autolink type,
 	 */
 	if (bufprefix(link, "mailto:") == 0) {
 		houdini_escape_html0(ob, link->data + 7, link->size - 7, 0);
+	} else if (link->data[0] == '&' || link->data[0] == '@' || link->data[0] == '%') {
+		put_link_truncated(ob, link, 8);
 	} else {
-		put_link_truncated(ob, link);
+		put_link_truncated(ob, link, max_cols);
 	}
 
 	BUFPUTSL(ob, "</a>");